21910780

素因数分解:

$2^2\times 5^1\times {\mathrm{443}}^1\times {\mathrm{2473}}^1$

素因数の和:2925

約数の個数: 24

約数和(自身を含む): 46135152

約数和(自身を除く): 24224372

約数列:

[1, 2, 4, 5, 10, 20, 443, 886, 1772, 2215, 2473, 4430, 4946, 8860, 9892, 12365, 24730, 49460, 1095539, 2191078, 4382156, 5477695, 10955390, 21910780]

約数ペア:

[(1, 21910780), (2, 10955390), (4, 5477695), (5, 4382156), (10, 2191078), (20, 1095539), (443, 49460), (886, 24730), (1772, 12365), (2215, 9892), (2473, 8860), (4430, 4946)]