20902300

素因数分解:

$2^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{4861}}^1$

素因数の和:4918

約数の個数: 36

約数和(自身を含む): 46422376

約数和(自身を除く): 25520076

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 172, 215, 430, 860, 1075, 2150, 4300, 4861, 9722, 19444, 24305, 48610, 97220, 121525, 209023, 243050, 418046, 486100, 836092, 1045115, 2090230, 4180460, 5225575, 10451150, 20902300]

約数ペア:

[(1, 20902300), (2, 10451150), (4, 5225575), (5, 4180460), (10, 2090230), (20, 1045115), (25, 836092), (43, 486100), (50, 418046), (86, 243050), (100, 209023), (172, 121525), (215, 97220), (430, 48610), (860, 24305), (1075, 19444), (2150, 9722), (4300, 4861)]