19891917

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{1907}}^1$

素因数の和:1993

約数の個数: 24

約数和(自身を含む): 30756960

約数和(自身を除く): 10865043

約数列:

[1, 3, 9, 19, 57, 61, 171, 183, 549, 1159, 1907, 3477, 5721, 10431, 17163, 36233, 108699, 116327, 326097, 348981, 1046943, 2210213, 6630639, 19891917]

約数ペア:

[(1, 19891917), (3, 6630639), (9, 2210213), (19, 1046943), (57, 348981), (61, 326097), (171, 116327), (183, 108699), (549, 36233), (1159, 17163), (1907, 10431), (3477, 5721)]