20918150

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{521}}^1$

素因数の和:617

約数の個数: 48

約数和(自身を含む): 43108848

約数和(自身を除く): 22190698

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 73, 110, 146, 275, 365, 521, 550, 730, 803, 1042, 1606, 1825, 2605, 3650, 4015, 5210, 5731, 8030, 11462, 13025, 20075, 26050, 28655, 38033, 40150, 57310, 76066, 143275, 190165, 286550, 380330, 418363, 836726, 950825, 1901650, 2091815, 4183630, 10459075, 20918150]

約数ペア:

[(1, 20918150), (2, 10459075), (5, 4183630), (10, 2091815), (11, 1901650), (22, 950825), (25, 836726), (50, 418363), (55, 380330), (73, 286550), (110, 190165), (146, 143275), (275, 76066), (365, 57310), (521, 40150), (550, 38033), (730, 28655), (803, 26050), (1042, 20075), (1606, 13025), (1825, 11462), (2605, 8030), (3650, 5731), (4015, 5210)]