21897120

素因数分解:

$2^5\times 3^1\times 5^1\times 7^4\times {\mathrm{19}}^1$

素因数の和:65

約数の個数: 240

約数和(自身を含む): 84702240

約数和(自身を除く): 62805120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 19, 20, 21, 24, 28, 30, 32, 35, 38, 40, 42, 48, 49, 56, 57, 60, 70, 76, 80, 84, 95, 96, 98, 105, 112, 114, 120, 133, 140, 147, 152, 160, 168, 190, 196, 210, 224, 228, 240, 245, 266, 280, 285, 294, 304, 336, 343, 380, 392, 399, 420, 456, 480, 490, 532, 560, 570, 588, 608, 665, 672, 686, 735, 760, 784, 798, 840, 912, 931, 980, 1029, 1064, 1120, 1140, 1176, 1330, 1372, 1470, 1520, 1568, 1596, 1680, 1715, 1824, 1862, 1960, 1995, 2058, 2128, 2280, 2352, 2401, 2660, 2744, 2793, 2940, 3040, 3192, 3360, 3430, 3724, 3920, 3990, 4116, 4256, 4560, 4655, 4704, 4802, 5145, 5320, 5488, 5586, 5880, 6384, 6517, 6860, 7203, 7448, 7840, 7980, 8232, 9120, 9310, 9604, 10290, 10640, 10976, 11172, 11760, 12005, 12768, 13034, 13720, 13965, 14406, 14896, 15960, 16464, 18620, 19208, 19551, 20580, 21280, 22344, 23520, 24010, 26068, 27440, 27930, 28812, 29792, 31920, 32585, 32928, 36015, 37240, 38416, 39102, 41160, 44688, 45619, 48020, 52136, 54880, 55860, 57624, 63840, 65170, 72030, 74480, 76832, 78204, 82320, 89376, 91238, 96040, 97755, 104272, 111720, 115248, 130340, 136857, 144060, 148960, 156408, 164640, 182476, 192080, 195510, 208544, 223440, 228095, 230496, 260680, 273714, 288120, 312816, 364952, 384160, 391020, 446880, 456190, 521360, 547428, 576240, 625632, 684285, 729904, 782040, 912380, 1042720, 1094856, 1152480, 1368570, 1459808, 1564080, 1824760, 2189712, 2737140, 3128160, 3649520, 4379424, 5474280, 7299040, 10948560, 21897120]

約数ペア:

[(1, 21897120), (2, 10948560), (3, 7299040), (4, 5474280), (5, 4379424), (6, 3649520), (7, 3128160), (8, 2737140), (10, 2189712), (12, 1824760), (14, 1564080), (15, 1459808), (16, 1368570), (19, 1152480), (20, 1094856), (21, 1042720), (24, 912380), (28, 782040), (30, 729904), (32, 684285), (35, 625632), (38, 576240), (40, 547428), (42, 521360), (48, 456190), (49, 446880), (56, 391020), (57, 384160), (60, 364952), (70, 312816), (76, 288120), (80, 273714), (84, 260680), (95, 230496), (96, 228095), (98, 223440), (105, 208544), (112, 195510), (114, 192080), (120, 182476), (133, 164640), (140, 156408), (147, 148960), (152, 144060), (160, 136857), (168, 130340), (190, 115248), (196, 111720), (210, 104272), (224, 97755), (228, 96040), (240, 91238), (245, 89376), (266, 82320), (280, 78204), (285, 76832), (294, 74480), (304, 72030), (336, 65170), (343, 63840), (380, 57624), (392, 55860), (399, 54880), (420, 52136), (456, 48020), (480, 45619), (490, 44688), (532, 41160), (560, 39102), (570, 38416), (588, 37240), (608, 36015), (665, 32928), (672, 32585), (686, 31920), (735, 29792), (760, 28812), (784, 27930), (798, 27440), (840, 26068), (912, 24010), (931, 23520), (980, 22344), (1029, 21280), (1064, 20580), (1120, 19551), (1140, 19208), (1176, 18620), (1330, 16464), (1372, 15960), (1470, 14896), (1520, 14406), (1568, 13965), (1596, 13720), (1680, 13034), (1715, 12768), (1824, 12005), (1862, 11760), (1960, 11172), (1995, 10976), (2058, 10640), (2128, 10290), (2280, 9604), (2352, 9310), (2401, 9120), (2660, 8232), (2744, 7980), (2793, 7840), (2940, 7448), (3040, 7203), (3192, 6860), (3360, 6517), (3430, 6384), (3724, 5880), (3920, 5586), (3990, 5488), (4116, 5320), (4256, 5145), (4560, 4802), (4655, 4704)]