157421980

素因数分解:

$2^2\times 5^1\times {\mathrm{311}}^1\times {\mathrm{25309}}^1$

素因数の和:25629

約数の個数: 24

約数和(自身を含む): 331662240

約数和(自身を除く): 174240260

約数列:

[1, 2, 4, 5, 10, 20, 311, 622, 1244, 1555, 3110, 6220, 25309, 50618, 101236, 126545, 253090, 506180, 7871099, 15742198, 31484396, 39355495, 78710990, 157421980]

約数ペア:

[(1, 157421980), (2, 78710990), (4, 39355495), (5, 31484396), (10, 15742198), (20, 7871099), (311, 506180), (622, 253090), (1244, 126545), (1555, 101236), (3110, 50618), (6220, 25309)]