20405030

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1\times {\mathrm{227}}^1$

素因数の和:424

約数の個数: 32

約数和(自身を含む): 37674720

約数和(自身を除く): 17269690

約数列:

[1, 2, 5, 10, 89, 101, 178, 202, 227, 445, 454, 505, 890, 1010, 1135, 2270, 8989, 17978, 20203, 22927, 40406, 44945, 45854, 89890, 101015, 114635, 202030, 229270, 2040503, 4081006, 10202515, 20405030]

約数ペア:

[(1, 20405030), (2, 10202515), (5, 4081006), (10, 2040503), (89, 229270), (101, 202030), (178, 114635), (202, 101015), (227, 89890), (445, 45854), (454, 44945), (505, 40406), (890, 22927), (1010, 20203), (1135, 17978), (2270, 8989)]