65780180

素因数分解:

$2^2\times 5^1\times {\mathrm{1621}}^1\times {\mathrm{2029}}^1$

素因数の和:3659

約数の個数: 24

約数和(自身を含む): 138291720

約数和(自身を除く): 72511540

約数列:

[1, 2, 4, 5, 10, 20, 1621, 2029, 3242, 4058, 6484, 8105, 8116, 10145, 16210, 20290, 32420, 40580, 3289009, 6578018, 13156036, 16445045, 32890090, 65780180]

約数ペア:

[(1, 65780180), (2, 32890090), (4, 16445045), (5, 13156036), (10, 6578018), (20, 3289009), (1621, 40580), (2029, 32420), (3242, 20290), (4058, 16210), (6484, 10145), (8105, 8116)]