20506731

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{42457}}^1$

素因数の和:42490

約数の個数: 16

約数和(自身を含む): 32607744

約数和(自身を除く): 12101013

約数列:

[1, 3, 7, 21, 23, 69, 161, 483, 42457, 127371, 297199, 891597, 976511, 2929533, 6835577, 20506731]

約数ペア:

[(1, 20506731), (3, 6835577), (7, 2929533), (21, 976511), (23, 891597), (69, 297199), (161, 127371), (483, 42457)]