21812259

素因数分解:

$3^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{6971}}^1$

素因数の和:7130

約数の個数: 16

約数和(自身を含む): 33465600

約数和(自身を除く): 11653341

約数列:

[1, 3, 7, 21, 149, 447, 1043, 3129, 6971, 20913, 48797, 146391, 1038679, 3116037, 7270753, 21812259]

約数ペア:

[(1, 21812259), (3, 7270753), (7, 3116037), (21, 1038679), (149, 146391), (447, 48797), (1043, 20913), (3129, 6971)]