21015804

素因数分解:

$2^2\times 3^1\times {\mathrm{263}}^1\times {\mathrm{6659}}^1$

素因数の和:6929

約数の個数: 24

約数和(自身を含む): 49230720

約数和(自身を除く): 28214916

約数列:

[1, 2, 3, 4, 6, 12, 263, 526, 789, 1052, 1578, 3156, 6659, 13318, 19977, 26636, 39954, 79908, 1751317, 3502634, 5253951, 7005268, 10507902, 21015804]

約数ペア:

[(1, 21015804), (2, 10507902), (3, 7005268), (4, 5253951), (6, 3502634), (12, 1751317), (263, 79908), (526, 39954), (789, 26636), (1052, 19977), (1578, 13318), (3156, 6659)]