21548560

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{521}}^1$

素因数の和:592

約数の個数: 80

約数和(自身を含む): 55924992

約数和(自身を除く): 34376432

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 47, 55, 80, 88, 94, 110, 176, 188, 220, 235, 376, 440, 470, 517, 521, 752, 880, 940, 1034, 1042, 1880, 2068, 2084, 2585, 2605, 3760, 4136, 4168, 5170, 5210, 5731, 8272, 8336, 10340, 10420, 11462, 20680, 20840, 22924, 24487, 28655, 41360, 41680, 45848, 48974, 57310, 91696, 97948, 114620, 122435, 195896, 229240, 244870, 269357, 391792, 458480, 489740, 538714, 979480, 1077428, 1346785, 1958960, 2154856, 2693570, 4309712, 5387140, 10774280, 21548560]

約数ペア:

[(1, 21548560), (2, 10774280), (4, 5387140), (5, 4309712), (8, 2693570), (10, 2154856), (11, 1958960), (16, 1346785), (20, 1077428), (22, 979480), (40, 538714), (44, 489740), (47, 458480), (55, 391792), (80, 269357), (88, 244870), (94, 229240), (110, 195896), (176, 122435), (188, 114620), (220, 97948), (235, 91696), (376, 57310), (440, 48974), (470, 45848), (517, 41680), (521, 41360), (752, 28655), (880, 24487), (940, 22924), (1034, 20840), (1042, 20680), (1880, 11462), (2068, 10420), (2084, 10340), (2585, 8336), (2605, 8272), (3760, 5731), (4136, 5210), (4168, 5170)]