12943820

素因数分解:

$2^2\times 5^1\times {\mathrm{311}}^1\times {\mathrm{2081}}^1$

素因数の和:2401

約数の個数: 24

約数和(自身を含む): 27282528

約数和(自身を除く): 14338708

約数列:

[1, 2, 4, 5, 10, 20, 311, 622, 1244, 1555, 2081, 3110, 4162, 6220, 8324, 10405, 20810, 41620, 647191, 1294382, 2588764, 3235955, 6471910, 12943820]

約数ペア:

[(1, 12943820), (2, 6471910), (4, 3235955), (5, 2588764), (10, 1294382), (20, 647191), (311, 41620), (622, 20810), (1244, 10405), (1555, 8324), (2081, 6220), (3110, 4162)]