90111931

素因数分解:

$7^4\times {\mathrm{13}}^1\times {\mathrm{2887}}^1$

素因数の和:2928

約数の個数: 20

約数和(自身を含む): 113250032

約数和(自身を除く): 23138101

約数列:

[1, 7, 13, 49, 91, 343, 637, 2401, 2887, 4459, 20209, 31213, 37531, 141463, 262717, 990241, 1839019, 6931687, 12873133, 90111931]

約数ペア:

[(1, 90111931), (7, 12873133), (13, 6931687), (49, 1839019), (91, 990241), (343, 262717), (637, 141463), (2401, 37531), (2887, 31213), (4459, 20209)]