21920965

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{1907}}^1$

素因数の和:1953

約数の個数: 24

約数和(自身を含む): 30451680

約数和(自身を除く): 8530715

約数列:

[1, 5, 11, 19, 55, 95, 121, 209, 605, 1045, 1907, 2299, 9535, 11495, 20977, 36233, 104885, 181165, 230747, 398563, 1153735, 1992815, 4384193, 21920965]

約数ペア:

[(1, 21920965), (5, 4384193), (11, 1992815), (19, 1153735), (55, 398563), (95, 230747), (121, 181165), (209, 104885), (605, 36233), (1045, 20977), (1907, 11495), (2299, 9535)]