31217720

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{10691}}^1$

素因数の和:10775

約数の個数: 32

約数和(自身を含む): 71208720

約数和(自身を除く): 39991000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 10691, 21382, 42764, 53455, 85528, 106910, 213820, 427640, 780443, 1560886, 3121772, 3902215, 6243544, 7804430, 15608860, 31217720]

約数ペア:

[(1, 31217720), (2, 15608860), (4, 7804430), (5, 6243544), (8, 3902215), (10, 3121772), (20, 1560886), (40, 780443), (73, 427640), (146, 213820), (292, 106910), (365, 85528), (584, 53455), (730, 42764), (1460, 21382), (2920, 10691)]