20967807

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{18839}}^1$

素因数の和:18902

約数の個数: 16

約数和(自身を含む): 32555520

約数和(自身を除く): 11587713

約数列:

[1, 3, 7, 21, 53, 159, 371, 1113, 18839, 56517, 131873, 395619, 998467, 2995401, 6989269, 20967807]

約数ペア:

[(1, 20967807), (3, 6989269), (7, 2995401), (21, 998467), (53, 395619), (159, 131873), (371, 56517), (1113, 18839)]