20513690

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{33629}}^1$

素因数の和:33697

約数の個数: 16

約数和(自身を含む): 37531080

約数和(自身を除く): 17017390

約数列:

[1, 2, 5, 10, 61, 122, 305, 610, 33629, 67258, 168145, 336290, 2051369, 4102738, 10256845, 20513690]

約数ペア:

[(1, 20513690), (2, 10256845), (5, 4102738), (10, 2051369), (61, 336290), (122, 168145), (305, 67258), (610, 33629)]