20480278

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{859}}^1$

素因数の和:1012

約数の個数: 32

約数和(自身を含む): 38142720

約数和(自身を除く): 17662442

約数列:

[1, 2, 7, 13, 14, 26, 91, 131, 182, 262, 859, 917, 1703, 1718, 1834, 3406, 6013, 11167, 11921, 12026, 22334, 23842, 78169, 112529, 156338, 225058, 787703, 1462877, 1575406, 2925754, 10240139, 20480278]

約数ペア:

[(1, 20480278), (2, 10240139), (7, 2925754), (13, 1575406), (14, 1462877), (26, 787703), (91, 225058), (131, 156338), (182, 112529), (262, 78169), (859, 23842), (917, 22334), (1703, 12026), (1718, 11921), (1834, 11167), (3406, 6013)]