20122040

素因数分解:

$2^3\times 5^1\times {\mathrm{571}}^1\times {\mathrm{881}}^1$

素因数の和:1463

約数の個数: 32

約数和(自身を含む): 45405360

約数和(自身を除く): 25283320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 571, 881, 1142, 1762, 2284, 2855, 3524, 4405, 4568, 5710, 7048, 8810, 11420, 17620, 22840, 35240, 503051, 1006102, 2012204, 2515255, 4024408, 5030510, 10061020, 20122040]

約数ペア:

[(1, 20122040), (2, 10061020), (4, 5030510), (5, 4024408), (8, 2515255), (10, 2012204), (20, 1006102), (40, 503051), (571, 35240), (881, 22840), (1142, 17620), (1762, 11420), (2284, 8810), (2855, 7048), (3524, 5710), (4405, 4568)]