21990314

素因数分解:

$2^1\times {\mathrm{109}}^1\times {\mathrm{149}}^1\times {\mathrm{677}}^1$

素因数の和:937

約数の個数: 16

約数和(自身を含む): 33561000

約数和(自身を除く): 11570686

約数列:

[1, 2, 109, 149, 218, 298, 677, 1354, 16241, 32482, 73793, 100873, 147586, 201746, 10995157, 21990314]

約数ペア:

[(1, 21990314), (2, 10995157), (109, 201746), (149, 147586), (218, 100873), (298, 73793), (677, 32482), (1354, 16241)]