20165212820

素因数分解:

$2^2\times 5^1\times {\mathrm{2381}}^1\times {\mathrm{423461}}^1$

素因数の和:425851

約数の個数: 24

約数和(自身を含む): 42364832328

約数和(自身を除く): 22199619508

約数列:

[1, 2, 4, 5, 10, 20, 2381, 4762, 9524, 11905, 23810, 47620, 423461, 846922, 1693844, 2117305, 4234610, 8469220, 1008260641, 2016521282, 4033042564, 5041303205, 10082606410, 20165212820]

約数ペア:

[(1, 20165212820), (2, 10082606410), (4, 5041303205), (5, 4033042564), (10, 2016521282), (20, 1008260641), (2381, 8469220), (4762, 4234610), (9524, 2117305), (11905, 1693844), (23810, 846922), (47620, 423461)]