20147440

素因数分解:

$2^4\times 5^1\times {\mathrm{251843}}^1$

素因数の和:251856

約数の個数: 20

約数和(自身を含む): 46842984

約数和(自身を除く): 26695544

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 251843, 503686, 1007372, 1259215, 2014744, 2518430, 4029488, 5036860, 10073720, 20147440]

約数ペア:

[(1, 20147440), (2, 10073720), (4, 5036860), (5, 4029488), (8, 2518430), (10, 2014744), (16, 1259215), (20, 1007372), (40, 503686), (80, 251843)]