20379880

素因数分解:

$2^3\times 5^1\times {\mathrm{467}}^1\times {\mathrm{1091}}^1$

素因数の和:1569

約数の個数: 32

約数和(自身を含む): 45995040

約数和(自身を除く): 25615160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 467, 934, 1091, 1868, 2182, 2335, 3736, 4364, 4670, 5455, 8728, 9340, 10910, 18680, 21820, 43640, 509497, 1018994, 2037988, 2547485, 4075976, 5094970, 10189940, 20379880]

約数ペア:

[(1, 20379880), (2, 10189940), (4, 5094970), (5, 4075976), (8, 2547485), (10, 2037988), (20, 1018994), (40, 509497), (467, 43640), (934, 21820), (1091, 18680), (1868, 10910), (2182, 9340), (2335, 8728), (3736, 5455), (4364, 4670)]