201209420

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{113039}}^1$

素因数の和:113137

約数の個数: 24

約数和(自身を含む): 427291200

約数和(自身を除く): 226081780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 113039, 226078, 452156, 565195, 1130390, 2260780, 10060471, 20120942, 40241884, 50302355, 100604710, 201209420]

約数ペア:

[(1, 201209420), (2, 100604710), (4, 50302355), (5, 40241884), (10, 20120942), (20, 10060471), (89, 2260780), (178, 1130390), (356, 565195), (445, 452156), (890, 226078), (1780, 113039)]