66486920

素因数分解:

$2^3\times 5^1\times {\mathrm{419}}^1\times {\mathrm{3967}}^1$

素因数の和:4397

約数の個数: 32

約数和(自身を含む): 149990400

約数和(自身を除く): 83503480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 419, 838, 1676, 2095, 3352, 3967, 4190, 7934, 8380, 15868, 16760, 19835, 31736, 39670, 79340, 158680, 1662173, 3324346, 6648692, 8310865, 13297384, 16621730, 33243460, 66486920]

約数ペア:

[(1, 66486920), (2, 33243460), (4, 16621730), (5, 13297384), (8, 8310865), (10, 6648692), (20, 3324346), (40, 1662173), (419, 158680), (838, 79340), (1676, 39670), (2095, 31736), (3352, 19835), (3967, 16760), (4190, 15868), (7934, 8380)]