20998427520

素因数分解:

$2^7\times 3^1\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{19777}}^1$

素因数の和:19885

約数の個数: 256

約数和(自身を含む): 77466470400

約数和(自身を除く): 56468042880

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 64, 70, 79, 80, 84, 96, 105, 112, 120, 128, 140, 158, 160, 168, 192, 210, 224, 237, 240, 280, 316, 320, 336, 384, 395, 420, 448, 474, 480, 553, 560, 632, 640, 672, 790, 840, 896, 948, 960, 1106, 1120, 1185, 1264, 1344, 1580, 1659, 1680, 1896, 1920, 2212, 2240, 2370, 2528, 2688, 2765, 3160, 3318, 3360, 3792, 4424, 4480, 4740, 5056, 5530, 6320, 6636, 6720, 7584, 8295, 8848, 9480, 10112, 11060, 12640, 13272, 13440, 15168, 16590, 17696, 18960, 19777, 22120, 25280, 26544, 30336, 33180, 35392, 37920, 39554, 44240, 50560, 53088, 59331, 66360, 70784, 75840, 79108, 88480, 98885, 106176, 118662, 132720, 138439, 151680, 158216, 176960, 197770, 212352, 237324, 265440, 276878, 296655, 316432, 353920, 395540, 415317, 474648, 530880, 553756, 593310, 632864, 692195, 791080, 830634, 949296, 1061760, 1107512, 1186620, 1265728, 1384390, 1562383, 1582160, 1661268, 1898592, 2076585, 2215024, 2373240, 2531456, 2768780, 3124766, 3164320, 3322536, 3797184, 4153170, 4430048, 4687149, 4746480, 5537560, 6249532, 6328640, 6645072, 7594368, 7811915, 8306340, 8860096, 9374298, 9492960, 10936681, 11075120, 12499064, 12657280, 13290144, 15623830, 16612680, 17720192, 18748596, 18985920, 21873362, 22150240, 23435745, 24998128, 26580288, 31247660, 32810043, 33225360, 37497192, 37971840, 43746724, 44300480, 46871490, 49996256, 53160576, 54683405, 62495320, 65620086, 66450720, 74994384, 87493448, 88600960, 93742980, 99992512, 109366810, 124990640, 131240172, 132901440, 149988768, 164050215, 174986896, 187485960, 199985024, 218733620, 249981280, 262480344, 265802880, 299977536, 328100430, 349973792, 374971920, 437467240, 499962560, 524960688, 599955072, 656200860, 699947584, 749943840, 874934480, 999925120, 1049921376, 1312401720, 1399895168, 1499887680, 1749868960, 2099842752, 2624803440, 2999775360, 3499737920, 4199685504, 5249606880, 6999475840, 10499213760, 20998427520]

約数ペア:

[(1, 20998427520), (2, 10499213760), (3, 6999475840), (4, 5249606880), (5, 4199685504), (6, 3499737920), (7, 2999775360), (8, 2624803440), (10, 2099842752), (12, 1749868960), (14, 1499887680), (15, 1399895168), (16, 1312401720), (20, 1049921376), (21, 999925120), (24, 874934480), (28, 749943840), (30, 699947584), (32, 656200860), (35, 599955072), (40, 524960688), (42, 499962560), (48, 437467240), (56, 374971920), (60, 349973792), (64, 328100430), (70, 299977536), (79, 265802880), (80, 262480344), (84, 249981280), (96, 218733620), (105, 199985024), (112, 187485960), (120, 174986896), (128, 164050215), (140, 149988768), (158, 132901440), (160, 131240172), (168, 124990640), (192, 109366810), (210, 99992512), (224, 93742980), (237, 88600960), (240, 87493448), (280, 74994384), (316, 66450720), (320, 65620086), (336, 62495320), (384, 54683405), (395, 53160576), (420, 49996256), (448, 46871490), (474, 44300480), (480, 43746724), (553, 37971840), (560, 37497192), (632, 33225360), (640, 32810043), (672, 31247660), (790, 26580288), (840, 24998128), (896, 23435745), (948, 22150240), (960, 21873362), (1106, 18985920), (1120, 18748596), (1185, 17720192), (1264, 16612680), (1344, 15623830), (1580, 13290144), (1659, 12657280), (1680, 12499064), (1896, 11075120), (1920, 10936681), (2212, 9492960), (2240, 9374298), (2370, 8860096), (2528, 8306340), (2688, 7811915), (2765, 7594368), (3160, 6645072), (3318, 6328640), (3360, 6249532), (3792, 5537560), (4424, 4746480), (4480, 4687149), (4740, 4430048), (5056, 4153170), (5530, 3797184), (6320, 3322536), (6636, 3164320), (6720, 3124766), (7584, 2768780), (8295, 2531456), (8848, 2373240), (9480, 2215024), (10112, 2076585), (11060, 1898592), (12640, 1661268), (13272, 1582160), (13440, 1562383), (15168, 1384390), (16590, 1265728), (17696, 1186620), (18960, 1107512), (19777, 1061760), (22120, 949296), (25280, 830634), (26544, 791080), (30336, 692195), (33180, 632864), (35392, 593310), (37920, 553756), (39554, 530880), (44240, 474648), (50560, 415317), (53088, 395540), (59331, 353920), (66360, 316432), (70784, 296655), (75840, 276878), (79108, 265440), (88480, 237324), (98885, 212352), (106176, 197770), (118662, 176960), (132720, 158216), (138439, 151680)]