66418580

素因数分解:

$2^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{15739}}^1$

素因数の和:15959

約数の個数: 24

約数和(自身を含む): 140148960

約数和(自身を除く): 73730380

約数列:

[1, 2, 4, 5, 10, 20, 211, 422, 844, 1055, 2110, 4220, 15739, 31478, 62956, 78695, 157390, 314780, 3320929, 6641858, 13283716, 16604645, 33209290, 66418580]

約数ペア:

[(1, 66418580), (2, 33209290), (4, 16604645), (5, 13283716), (10, 6641858), (20, 3320929), (211, 314780), (422, 157390), (844, 78695), (1055, 62956), (2110, 31478), (4220, 15739)]