65577620

素因数分解:

$2^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{8429}}^1$

素因数の和:8827

約数の個数: 24

約数和(自身を含む): 138083400

約数和(自身を除く): 72505780

約数列:

[1, 2, 4, 5, 10, 20, 389, 778, 1556, 1945, 3890, 7780, 8429, 16858, 33716, 42145, 84290, 168580, 3278881, 6557762, 13115524, 16394405, 32788810, 65577620]

約数ペア:

[(1, 65577620), (2, 32788810), (4, 16394405), (5, 13115524), (10, 6557762), (20, 3278881), (389, 168580), (778, 84290), (1556, 42145), (1945, 33716), (3890, 16858), (7780, 8429)]