20962040

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:165

約数の個数: 96

約数和(自身を含む): 53434080

約数和(自身を除く): 32472040

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 61, 71, 88, 110, 121, 122, 142, 220, 242, 244, 284, 305, 355, 440, 484, 488, 568, 605, 610, 671, 710, 781, 968, 1210, 1220, 1342, 1420, 1562, 2420, 2440, 2684, 2840, 3124, 3355, 3905, 4331, 4840, 5368, 6248, 6710, 7381, 7810, 8591, 8662, 13420, 14762, 15620, 17182, 17324, 21655, 26840, 29524, 31240, 34364, 34648, 36905, 42955, 43310, 47641, 59048, 68728, 73810, 85910, 86620, 95282, 147620, 171820, 173240, 190564, 238205, 295240, 343640, 381128, 476410, 524051, 952820, 1048102, 1905640, 2096204, 2620255, 4192408, 5240510, 10481020, 20962040]

約数ペア:

[(1, 20962040), (2, 10481020), (4, 5240510), (5, 4192408), (8, 2620255), (10, 2096204), (11, 1905640), (20, 1048102), (22, 952820), (40, 524051), (44, 476410), (55, 381128), (61, 343640), (71, 295240), (88, 238205), (110, 190564), (121, 173240), (122, 171820), (142, 147620), (220, 95282), (242, 86620), (244, 85910), (284, 73810), (305, 68728), (355, 59048), (440, 47641), (484, 43310), (488, 42955), (568, 36905), (605, 34648), (610, 34364), (671, 31240), (710, 29524), (781, 26840), (968, 21655), (1210, 17324), (1220, 17182), (1342, 15620), (1420, 14762), (1562, 13420), (2420, 8662), (2440, 8591), (2684, 7810), (2840, 7381), (3124, 6710), (3355, 6248), (3905, 5368), (4331, 4840)]