64521820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{313}}^1\times {\mathrm{937}}^1$

素因数の和:1270

約数の個数: 48

約数和(自身を含む): 148444128

約数和(自身を除く): 83922308

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 313, 626, 937, 1252, 1565, 1874, 3130, 3443, 3748, 4685, 6260, 6886, 9370, 10307, 13772, 17215, 18740, 20614, 34430, 41228, 51535, 68860, 103070, 206140, 293281, 586562, 1173124, 1466405, 2932810, 3226091, 5865620, 6452182, 12904364, 16130455, 32260910, 64521820]

約数ペア:

[(1, 64521820), (2, 32260910), (4, 16130455), (5, 12904364), (10, 6452182), (11, 5865620), (20, 3226091), (22, 2932810), (44, 1466405), (55, 1173124), (110, 586562), (220, 293281), (313, 206140), (626, 103070), (937, 68860), (1252, 51535), (1565, 41228), (1874, 34430), (3130, 20614), (3443, 18740), (3748, 17215), (4685, 13772), (6260, 10307), (6886, 9370)]