21221265819

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{571}}^1\times {\mathrm{593}}^1\times {\mathrm{1607}}^1$

素因数の和:2787

約数の個数: 32

約数和(自身を含む): 30595428864

約数和(自身を除く): 9374163045

約数列:

[1, 3, 13, 39, 571, 593, 1607, 1713, 1779, 4821, 7423, 7709, 20891, 22269, 23127, 62673, 338603, 917597, 952951, 1015809, 2752791, 2858853, 4401839, 11928761, 12388363, 13205517, 35786283, 37165089, 544135021, 1632405063, 7073755273, 21221265819]

約数ペア:

[(1, 21221265819), (3, 7073755273), (13, 1632405063), (39, 544135021), (571, 37165089), (593, 35786283), (1607, 13205517), (1713, 12388363), (1779, 11928761), (4821, 4401839), (7423, 2858853), (7709, 2752791), (20891, 1015809), (22269, 952951), (23127, 917597), (62673, 338603)]