21504080

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1$

素因数の和:109

約数の個数: 160

約数和(自身を含む): 59996160

約数和(自身を除く): 38492080

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 26, 29, 31, 40, 46, 52, 58, 62, 65, 80, 92, 104, 115, 116, 124, 130, 145, 155, 184, 208, 230, 232, 248, 260, 290, 299, 310, 368, 377, 403, 460, 464, 496, 520, 580, 598, 620, 667, 713, 754, 806, 899, 920, 1040, 1160, 1196, 1240, 1334, 1426, 1495, 1508, 1612, 1798, 1840, 1885, 2015, 2320, 2392, 2480, 2668, 2852, 2990, 3016, 3224, 3335, 3565, 3596, 3770, 4030, 4495, 4784, 5336, 5704, 5980, 6032, 6448, 6670, 7130, 7192, 7540, 8060, 8671, 8990, 9269, 10672, 11408, 11687, 11960, 13340, 14260, 14384, 15080, 16120, 17342, 17980, 18538, 20677, 23374, 23920, 26680, 28520, 30160, 32240, 34684, 35960, 37076, 41354, 43355, 46345, 46748, 53360, 57040, 58435, 69368, 71920, 74152, 82708, 86710, 92690, 93496, 103385, 116870, 138736, 148304, 165416, 173420, 185380, 186992, 206770, 233740, 268801, 330832, 346840, 370760, 413540, 467480, 537602, 693680, 741520, 827080, 934960, 1075204, 1344005, 1654160, 2150408, 2688010, 4300816, 5376020, 10752040, 21504080]

約数ペア:

[(1, 21504080), (2, 10752040), (4, 5376020), (5, 4300816), (8, 2688010), (10, 2150408), (13, 1654160), (16, 1344005), (20, 1075204), (23, 934960), (26, 827080), (29, 741520), (31, 693680), (40, 537602), (46, 467480), (52, 413540), (58, 370760), (62, 346840), (65, 330832), (80, 268801), (92, 233740), (104, 206770), (115, 186992), (116, 185380), (124, 173420), (130, 165416), (145, 148304), (155, 138736), (184, 116870), (208, 103385), (230, 93496), (232, 92690), (248, 86710), (260, 82708), (290, 74152), (299, 71920), (310, 69368), (368, 58435), (377, 57040), (403, 53360), (460, 46748), (464, 46345), (496, 43355), (520, 41354), (580, 37076), (598, 35960), (620, 34684), (667, 32240), (713, 30160), (754, 28520), (806, 26680), (899, 23920), (920, 23374), (1040, 20677), (1160, 18538), (1196, 17980), (1240, 17342), (1334, 16120), (1426, 15080), (1495, 14384), (1508, 14260), (1612, 13340), (1798, 11960), (1840, 11687), (1885, 11408), (2015, 10672), (2320, 9269), (2392, 8990), (2480, 8671), (2668, 8060), (2852, 7540), (2990, 7192), (3016, 7130), (3224, 6670), (3335, 6448), (3565, 6032), (3596, 5980), (3770, 5704), (4030, 5336), (4495, 4784)]