20571089

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{149}}^1\times {\mathrm{163}}^1$

素因数の和:341

約数の個数: 24

約数和(自身を含む): 26174400

約数和(自身を除く): 5603311

約数列:

[1, 7, 11, 77, 121, 149, 163, 847, 1043, 1141, 1639, 1793, 11473, 12551, 18029, 19723, 24287, 126203, 138061, 170009, 267157, 1870099, 2938727, 20571089]

約数ペア:

[(1, 20571089), (7, 2938727), (11, 1870099), (77, 267157), (121, 170009), (149, 138061), (163, 126203), (847, 24287), (1043, 19723), (1141, 18029), (1639, 12551), (1793, 11473)]