157642480

素因数分解:

$2^4\times 5^1\times {\mathrm{1970531}}^1$

素因数の和:1970544

約数の個数: 20

約数和(自身を含む): 366518952

約数和(自身を除く): 208876472

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1970531, 3941062, 7882124, 9852655, 15764248, 19705310, 31528496, 39410620, 78821240, 157642480]

約数ペア:

[(1, 157642480), (2, 78821240), (4, 39410620), (5, 31528496), (8, 19705310), (10, 15764248), (16, 9852655), (20, 7882124), (40, 3941062), (80, 1970531)]