20809090

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{103}}^1\times {\mathrm{227}}^1$

素因数の和:426

約数の個数: 32

約数和(自身を含む): 38413440

約数和(自身を除く): 17604350

約数列:

[1, 2, 5, 10, 89, 103, 178, 206, 227, 445, 454, 515, 890, 1030, 1135, 2270, 9167, 18334, 20203, 23381, 40406, 45835, 46762, 91670, 101015, 116905, 202030, 233810, 2080909, 4161818, 10404545, 20809090]

約数ペア:

[(1, 20809090), (2, 10404545), (5, 4161818), (10, 2080909), (89, 233810), (103, 202030), (178, 116905), (206, 101015), (227, 91670), (445, 46762), (454, 45835), (515, 40406), (890, 23381), (1030, 20203), (1135, 18334), (2270, 9167)]