138515920

素因数分解:

$2^4\times 5^1\times {\mathrm{1731449}}^1$

素因数の和:1731462

約数の個数: 20

約数和(自身を含む): 322049700

約数和(自身を除く): 183533780

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1731449, 3462898, 6925796, 8657245, 13851592, 17314490, 27703184, 34628980, 69257960, 138515920]

約数ペア:

[(1, 138515920), (2, 69257960), (4, 34628980), (5, 27703184), (8, 17314490), (10, 13851592), (16, 8657245), (20, 6925796), (40, 3462898), (80, 1731449)]