20851539

素因数分解:

$3^1\times {\mathrm{67}}^1\times {\mathrm{227}}^1\times {\mathrm{457}}^1$

素因数の和:754

約数の個数: 16

約数和(自身を含む): 28403328

約数和(自身を除く): 7551789

約数列:

[1, 3, 67, 201, 227, 457, 681, 1371, 15209, 30619, 45627, 91857, 103739, 311217, 6950513, 20851539]

約数ペア:

[(1, 20851539), (3, 6950513), (67, 311217), (201, 103739), (227, 91857), (457, 45627), (681, 30619), (1371, 15209)]