81265580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{521}}^1\times {\mathrm{709}}^1$

素因数の和:1250

約数の個数: 48

約数和(自身を含む): 186792480

約数和(自身を除く): 105526900

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 521, 709, 1042, 1418, 2084, 2605, 2836, 3545, 5210, 5731, 7090, 7799, 10420, 11462, 14180, 15598, 22924, 28655, 31196, 38995, 57310, 77990, 114620, 155980, 369389, 738778, 1477556, 1846945, 3693890, 4063279, 7387780, 8126558, 16253116, 20316395, 40632790, 81265580]

約数ペア:

[(1, 81265580), (2, 40632790), (4, 20316395), (5, 16253116), (10, 8126558), (11, 7387780), (20, 4063279), (22, 3693890), (44, 1846945), (55, 1477556), (110, 738778), (220, 369389), (521, 155980), (709, 114620), (1042, 77990), (1418, 57310), (2084, 38995), (2605, 31196), (2836, 28655), (3545, 22924), (5210, 15598), (5731, 14180), (7090, 11462), (7799, 10420)]