865121360

素因数分解:

$2^4\times 5^1\times {\mathrm{10814017}}^1$

素因数の和:10814030

約数の個数: 20

約数和(自身を含む): 2011407348

約数和(自身を除く): 1146285988

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 10814017, 21628034, 43256068, 54070085, 86512136, 108140170, 173024272, 216280340, 432560680, 865121360]

約数ペア:

[(1, 865121360), (2, 432560680), (4, 216280340), (5, 173024272), (8, 108140170), (10, 86512136), (16, 54070085), (20, 43256068), (40, 21628034), (80, 10814017)]