21115311

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{43717}}^1$

素因数の和:43750

約数の個数: 16

約数和(自身を含む): 33575424

約数和(自身を除く): 12460113

約数列:

[1, 3, 7, 21, 23, 69, 161, 483, 43717, 131151, 306019, 918057, 1005491, 3016473, 7038437, 21115311]

約数ペア:

[(1, 21115311), (3, 7038437), (7, 3016473), (21, 1005491), (23, 918057), (69, 306019), (161, 131151), (483, 43717)]