420822145

素因数分解:

$5^1\times {\mathrm{23}}^2\times {\mathrm{389}}^1\times {\mathrm{409}}^1$

素因数の和:849

約数の個数: 24

約数和(自身を含む): 530548200

約数和(自身を除く): 109726055

約数列:

[1, 5, 23, 115, 389, 409, 529, 1945, 2045, 2645, 8947, 9407, 44735, 47035, 159101, 205781, 216361, 795505, 1028905, 1081805, 3659323, 18296615, 84164429, 420822145]

約数ペア:

[(1, 420822145), (5, 84164429), (23, 18296615), (115, 3659323), (389, 1081805), (409, 1028905), (529, 795505), (1945, 216361), (2045, 205781), (2645, 159101), (8947, 47035), (9407, 44735)]