21231978

素因数分解:

$2^1\times 3^1\times {\mathrm{359}}^1\times {\mathrm{9857}}^1$

素因数の和:10221

約数の個数: 16

約数和(自身を含む): 42586560

約数和(自身を除く): 21354582

約数列:

[1, 2, 3, 6, 359, 718, 1077, 2154, 9857, 19714, 29571, 59142, 3538663, 7077326, 10615989, 21231978]

約数ペア:

[(1, 21231978), (2, 10615989), (3, 7077326), (6, 3538663), (359, 59142), (718, 29571), (1077, 19714), (2154, 9857)]