207819620

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{102881}}^1$

素因数の和:102991

約数の個数: 24

約数和(自身を含む): 440746488

約数和(自身を除く): 232926868

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 102881, 205762, 411524, 514405, 1028810, 2057620, 10390981, 20781962, 41563924, 51954905, 103909810, 207819620]

約数ペア:

[(1, 207819620), (2, 103909810), (4, 51954905), (5, 41563924), (10, 20781962), (20, 10390981), (101, 2057620), (202, 1028810), (404, 514405), (505, 411524), (1010, 205762), (2020, 102881)]