81902005

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{389}}^1\times {\mathrm{2477}}^1$

素因数の和:2888

約数の個数: 16

約数和(自身を含む): 104373360

約数和(自身を除く): 22471355

約数列:

[1, 5, 17, 85, 389, 1945, 2477, 6613, 12385, 33065, 42109, 210545, 963553, 4817765, 16380401, 81902005]

約数ペア:

[(1, 81902005), (5, 16380401), (17, 4817765), (85, 963553), (389, 210545), (1945, 42109), (2477, 33065), (6613, 12385)]