18271220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{1567}}^1$

素因数の和:1640

約数の個数: 48

約数和(自身を含む): 42674688

約数和(自身を除く): 24403468

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 53, 55, 106, 110, 212, 220, 265, 530, 583, 1060, 1166, 1567, 2332, 2915, 3134, 5830, 6268, 7835, 11660, 15670, 17237, 31340, 34474, 68948, 83051, 86185, 166102, 172370, 332204, 344740, 415255, 830510, 913561, 1661020, 1827122, 3654244, 4567805, 9135610, 18271220]

約数ペア:

[(1, 18271220), (2, 9135610), (4, 4567805), (5, 3654244), (10, 1827122), (11, 1661020), (20, 913561), (22, 830510), (44, 415255), (53, 344740), (55, 332204), (106, 172370), (110, 166102), (212, 86185), (220, 83051), (265, 68948), (530, 34474), (583, 31340), (1060, 17237), (1166, 15670), (1567, 11660), (2332, 7835), (2915, 6268), (3134, 5830)]