20199759620

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{101}}^1\times {\mathrm{188677}}^1$

素因数の和:188840

約数の個数: 48

約数和(自身を含む): 43648013808

約数和(自身を除く): 23448254188

約数列:

[1, 2, 4, 5, 10, 20, 53, 101, 106, 202, 212, 265, 404, 505, 530, 1010, 1060, 2020, 5353, 10706, 21412, 26765, 53530, 107060, 188677, 377354, 754708, 943385, 1886770, 3773540, 9999881, 19056377, 19999762, 38112754, 39999524, 49999405, 76225508, 95281885, 99998810, 190563770, 199997620, 381127540, 1009987981, 2019975962, 4039951924, 5049939905, 10099879810, 20199759620]

約数ペア:

[(1, 20199759620), (2, 10099879810), (4, 5049939905), (5, 4039951924), (10, 2019975962), (20, 1009987981), (53, 381127540), (101, 199997620), (106, 190563770), (202, 99998810), (212, 95281885), (265, 76225508), (404, 49999405), (505, 39999524), (530, 38112754), (1010, 19999762), (1060, 19056377), (2020, 9999881), (5353, 3773540), (10706, 1886770), (21412, 943385), (26765, 754708), (53530, 377354), (107060, 188677)]