21745311

素因数分解:

$3^1\times 7^1\times {\mathrm{271}}^1\times {\mathrm{3821}}^1$

素因数の和:4102

約数の個数: 16

約数和(自身を含む): 33266688

約数和(自身を除く): 11521377

約数列:

[1, 3, 7, 21, 271, 813, 1897, 3821, 5691, 11463, 26747, 80241, 1035491, 3106473, 7248437, 21745311]

約数ペア:

[(1, 21745311), (3, 7248437), (7, 3106473), (21, 1035491), (271, 80241), (813, 26747), (1897, 11463), (3821, 5691)]