21691839

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{313}}^1\times {\mathrm{1777}}^1$

素因数の和:2106

約数の個数: 16

約数和(自身を含む): 31264352

約数和(自身を除く): 9572513

約数列:

[1, 3, 13, 39, 313, 939, 1777, 4069, 5331, 12207, 23101, 69303, 556201, 1668603, 7230613, 21691839]

約数ペア:

[(1, 21691839), (3, 7230613), (13, 1668603), (39, 556201), (313, 69303), (939, 23101), (1777, 12207), (4069, 5331)]