21006419

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{2677}}^1$

素因数の和:2762

約数の個数: 16

約数和(自身を含む): 25708800

約数和(自身を除く): 4702381

約数列:

[1, 7, 19, 59, 133, 413, 1121, 2677, 7847, 18739, 50863, 157943, 356041, 1105601, 3000917, 21006419]

約数ペア:

[(1, 21006419), (7, 3000917), (19, 1105601), (59, 356041), (133, 157943), (413, 50863), (1121, 18739), (2677, 7847)]