20457640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{73063}}^1$

素因数の和:73081

約数の個数: 32

約数和(自身を含む): 52606080

約数和(自身を除く): 32148440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 73063, 146126, 292252, 365315, 511441, 584504, 730630, 1022882, 1461260, 2045764, 2557205, 2922520, 4091528, 5114410, 10228820, 20457640]

約数ペア:

[(1, 20457640), (2, 10228820), (4, 5114410), (5, 4091528), (7, 2922520), (8, 2557205), (10, 2045764), (14, 1461260), (20, 1022882), (28, 730630), (35, 584504), (40, 511441), (56, 365315), (70, 292252), (140, 146126), (280, 73063)]