157487920

素因数分解:

$2^4\times 5^1\times {\mathrm{1968599}}^1$

素因数の和:1968612

約数の個数: 20

約数和(自身を含む): 366159600

約数和(自身を除く): 208671680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1968599, 3937198, 7874396, 9842995, 15748792, 19685990, 31497584, 39371980, 78743960, 157487920]

約数ペア:

[(1, 157487920), (2, 78743960), (4, 39371980), (5, 31497584), (8, 19685990), (10, 15748792), (16, 9842995), (20, 7874396), (40, 3937198), (80, 1968599)]