205432820

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{144671}}^1$

素因数の和:144751

約数の個数: 24

約数和(自身を含む): 437488128

約数和(自身を除く): 232055308

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 144671, 289342, 578684, 723355, 1446710, 2893420, 10271641, 20543282, 41086564, 51358205, 102716410, 205432820]

約数ペア:

[(1, 205432820), (2, 102716410), (4, 51358205), (5, 41086564), (10, 20543282), (20, 10271641), (71, 2893420), (142, 1446710), (284, 723355), (355, 578684), (710, 289342), (1420, 144671)]