156857420

素因数分解:

$2^2\times 5^1\times {\mathrm{7842871}}^1$

素因数の和:7842880

約数の個数: 12

約数和(自身を含む): 329400624

約数和(自身を除く): 172543204

約数列:

[1, 2, 4, 5, 10, 20, 7842871, 15685742, 31371484, 39214355, 78428710, 156857420]

約数ペア:

[(1, 156857420), (2, 78428710), (4, 39214355), (5, 31371484), (10, 15685742), (20, 7842871)]