81309189

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{557}}^1$

素因数の和:789

約数の個数: 32

約数和(自身を含む): 123742080

約数和(自身を除く): 42432891

約数列:

[1, 3, 13, 19, 39, 57, 197, 247, 557, 591, 741, 1671, 2561, 3743, 7241, 7683, 10583, 11229, 21723, 31749, 48659, 109729, 137579, 145977, 329187, 412737, 1426477, 2084851, 4279431, 6254553, 27103063, 81309189]

約数ペア:

[(1, 81309189), (3, 27103063), (13, 6254553), (19, 4279431), (39, 2084851), (57, 1426477), (197, 412737), (247, 329187), (557, 145977), (591, 137579), (741, 109729), (1671, 48659), (2561, 31749), (3743, 21723), (7241, 11229), (7683, 10583)]