72705560

素因数分解:

$2^3\times 5^1\times {\mathrm{509}}^1\times {\mathrm{3571}}^1$

素因数の和:4091

約数の個数: 32

約数和(自身を含む): 163954800

約数和(自身を除く): 91249240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 509, 1018, 2036, 2545, 3571, 4072, 5090, 7142, 10180, 14284, 17855, 20360, 28568, 35710, 71420, 142840, 1817639, 3635278, 7270556, 9088195, 14541112, 18176390, 36352780, 72705560]

約数ペア:

[(1, 72705560), (2, 36352780), (4, 18176390), (5, 14541112), (8, 9088195), (10, 7270556), (20, 3635278), (40, 1817639), (509, 142840), (1018, 71420), (2036, 35710), (2545, 28568), (3571, 20360), (4072, 17855), (5090, 14284), (7142, 10180)]