80943820

素因数分解:

$2^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{19181}}^1$

素因数の和:19401

約数の個数: 24

約数和(自身を含む): 170796528

約数和(自身を除く): 89852708

約数列:

[1, 2, 4, 5, 10, 20, 211, 422, 844, 1055, 2110, 4220, 19181, 38362, 76724, 95905, 191810, 383620, 4047191, 8094382, 16188764, 20235955, 40471910, 80943820]

約数ペア:

[(1, 80943820), (2, 40471910), (4, 20235955), (5, 16188764), (10, 8094382), (20, 4047191), (211, 383620), (422, 191810), (844, 95905), (1055, 76724), (2110, 38362), (4220, 19181)]