20401960

素因数分解:

$2^3\times 5^1\times {\mathrm{510049}}^1$

素因数の和:510060

約数の個数: 16

約数和(自身を含む): 45904500

約数和(自身を除く): 25502540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 510049, 1020098, 2040196, 2550245, 4080392, 5100490, 10200980, 20401960]

約数ペア:

[(1, 20401960), (2, 10200980), (4, 5100490), (5, 4080392), (8, 2550245), (10, 2040196), (20, 1020098), (40, 510049)]