20145909

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{7213}}^1$

素因数の和:7249

約数の個数: 24

約数和(自身を含む): 32895840

約数和(自身を除く): 12749931

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 399, 931, 2793, 7213, 21639, 50491, 137047, 151473, 353437, 411141, 959329, 1060311, 2877987, 6715303, 20145909]

約数ペア:

[(1, 20145909), (3, 6715303), (7, 2877987), (19, 1060311), (21, 959329), (49, 411141), (57, 353437), (133, 151473), (147, 137047), (399, 50491), (931, 21639), (2793, 7213)]