717680

素因数分解:

$2^4\times 5^1\times {\mathrm{8971}}^1$

素因数の和:8984

約数の個数: 20

約数和(自身を含む): 1668792

約数和(自身を除く): 951112

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 8971, 17942, 35884, 44855, 71768, 89710, 143536, 179420, 358840, 717680]

約数ペア:

[(1, 717680), (2, 358840), (4, 179420), (5, 143536), (8, 89710), (10, 71768), (16, 44855), (20, 35884), (40, 17942), (80, 8971)]