7211980

素因数分解:

$2^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{1709}}^1$

素因数の和:1929

約数の個数: 24

約数和(自身を含む): 15225840

約数和(自身を除く): 8013860

約数列:

[1, 2, 4, 5, 10, 20, 211, 422, 844, 1055, 1709, 2110, 3418, 4220, 6836, 8545, 17090, 34180, 360599, 721198, 1442396, 1802995, 3605990, 7211980]

約数ペア:

[(1, 7211980), (2, 3605990), (4, 1802995), (5, 1442396), (10, 721198), (20, 360599), (211, 34180), (422, 17090), (844, 8545), (1055, 6836), (1709, 4220), (2110, 3418)]