21690240

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1$

素因数の和:125

約数の個数: 256

約数和(自身を含む): 82252800

約数和(自身を除く): 60562560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 13, 15, 16, 20, 22, 24, 26, 30, 32, 33, 39, 40, 44, 48, 52, 55, 60, 64, 65, 66, 78, 79, 80, 88, 96, 104, 110, 120, 128, 130, 132, 143, 156, 158, 160, 165, 176, 192, 195, 208, 220, 237, 240, 260, 264, 286, 312, 316, 320, 330, 352, 384, 390, 395, 416, 429, 440, 474, 480, 520, 528, 572, 624, 632, 640, 660, 704, 715, 780, 790, 832, 858, 869, 880, 948, 960, 1027, 1040, 1056, 1144, 1185, 1248, 1264, 1320, 1408, 1430, 1560, 1580, 1664, 1716, 1738, 1760, 1896, 1920, 2054, 2080, 2112, 2145, 2288, 2370, 2496, 2528, 2607, 2640, 2860, 3081, 3120, 3160, 3432, 3476, 3520, 3792, 4108, 4160, 4224, 4290, 4345, 4576, 4740, 4992, 5056, 5135, 5214, 5280, 5720, 6162, 6240, 6320, 6864, 6952, 7040, 7584, 8216, 8320, 8580, 8690, 9152, 9480, 10112, 10270, 10428, 10560, 11297, 11440, 12324, 12480, 12640, 13035, 13728, 13904, 15168, 15405, 16432, 17160, 17380, 18304, 18960, 20540, 20856, 21120, 22594, 22880, 24648, 24960, 25280, 26070, 27456, 27808, 30336, 30810, 32864, 33891, 34320, 34760, 37920, 41080, 41712, 45188, 45760, 49296, 50560, 52140, 54912, 55616, 56485, 61620, 65728, 67782, 68640, 69520, 75840, 82160, 83424, 90376, 91520, 98592, 104280, 111232, 112970, 123240, 131456, 135564, 137280, 139040, 151680, 164320, 166848, 169455, 180752, 197184, 208560, 225940, 246480, 271128, 274560, 278080, 328640, 333696, 338910, 361504, 394368, 417120, 451880, 492960, 542256, 556160, 657280, 677820, 723008, 834240, 903760, 985920, 1084512, 1355640, 1446016, 1668480, 1807520, 1971840, 2169024, 2711280, 3615040, 4338048, 5422560, 7230080, 10845120, 21690240]

約数ペア:

[(1, 21690240), (2, 10845120), (3, 7230080), (4, 5422560), (5, 4338048), (6, 3615040), (8, 2711280), (10, 2169024), (11, 1971840), (12, 1807520), (13, 1668480), (15, 1446016), (16, 1355640), (20, 1084512), (22, 985920), (24, 903760), (26, 834240), (30, 723008), (32, 677820), (33, 657280), (39, 556160), (40, 542256), (44, 492960), (48, 451880), (52, 417120), (55, 394368), (60, 361504), (64, 338910), (65, 333696), (66, 328640), (78, 278080), (79, 274560), (80, 271128), (88, 246480), (96, 225940), (104, 208560), (110, 197184), (120, 180752), (128, 169455), (130, 166848), (132, 164320), (143, 151680), (156, 139040), (158, 137280), (160, 135564), (165, 131456), (176, 123240), (192, 112970), (195, 111232), (208, 104280), (220, 98592), (237, 91520), (240, 90376), (260, 83424), (264, 82160), (286, 75840), (312, 69520), (316, 68640), (320, 67782), (330, 65728), (352, 61620), (384, 56485), (390, 55616), (395, 54912), (416, 52140), (429, 50560), (440, 49296), (474, 45760), (480, 45188), (520, 41712), (528, 41080), (572, 37920), (624, 34760), (632, 34320), (640, 33891), (660, 32864), (704, 30810), (715, 30336), (780, 27808), (790, 27456), (832, 26070), (858, 25280), (869, 24960), (880, 24648), (948, 22880), (960, 22594), (1027, 21120), (1040, 20856), (1056, 20540), (1144, 18960), (1185, 18304), (1248, 17380), (1264, 17160), (1320, 16432), (1408, 15405), (1430, 15168), (1560, 13904), (1580, 13728), (1664, 13035), (1716, 12640), (1738, 12480), (1760, 12324), (1896, 11440), (1920, 11297), (2054, 10560), (2080, 10428), (2112, 10270), (2145, 10112), (2288, 9480), (2370, 9152), (2496, 8690), (2528, 8580), (2607, 8320), (2640, 8216), (2860, 7584), (3081, 7040), (3120, 6952), (3160, 6864), (3432, 6320), (3476, 6240), (3520, 6162), (3792, 5720), (4108, 5280), (4160, 5214), (4224, 5135), (4290, 5056), (4345, 4992), (4576, 4740)]