20002520

素因数分解:

$2^3\times 5^1\times {\mathrm{193}}^1\times {\mathrm{2591}}^1$

素因数の和:2795

約数の個数: 32

約数和(自身を含む): 45256320

約数和(自身を除く): 25253800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 193, 386, 772, 965, 1544, 1930, 2591, 3860, 5182, 7720, 10364, 12955, 20728, 25910, 51820, 103640, 500063, 1000126, 2000252, 2500315, 4000504, 5000630, 10001260, 20002520]

約数ペア:

[(1, 20002520), (2, 10001260), (4, 5000630), (5, 4000504), (8, 2500315), (10, 2000252), (20, 1000126), (40, 500063), (193, 103640), (386, 51820), (772, 25910), (965, 20728), (1544, 12955), (1930, 10364), (2591, 7720), (3860, 5182)]