27912940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1787}}^1$

素因数の和:1878

約数の個数: 48

約数和(自身を含む): 64882944

約数和(自身を除く): 36970004

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 71, 110, 142, 220, 284, 355, 710, 781, 1420, 1562, 1787, 3124, 3574, 3905, 7148, 7810, 8935, 15620, 17870, 19657, 35740, 39314, 78628, 98285, 126877, 196570, 253754, 393140, 507508, 634385, 1268770, 1395647, 2537540, 2791294, 5582588, 6978235, 13956470, 27912940]

約数ペア:

[(1, 27912940), (2, 13956470), (4, 6978235), (5, 5582588), (10, 2791294), (11, 2537540), (20, 1395647), (22, 1268770), (44, 634385), (55, 507508), (71, 393140), (110, 253754), (142, 196570), (220, 126877), (284, 98285), (355, 78628), (710, 39314), (781, 35740), (1420, 19657), (1562, 17870), (1787, 15620), (3124, 8935), (3574, 7810), (3905, 7148)]