21199503

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{617}}^1\times {\mathrm{881}}^1$

素因数の和:1514

約数の個数: 16

約数和(自身を含む): 30524256

約数和(自身を除く): 9324753

約数列:

[1, 3, 13, 39, 617, 881, 1851, 2643, 8021, 11453, 24063, 34359, 543577, 1630731, 7066501, 21199503]

約数ペア:

[(1, 21199503), (3, 7066501), (13, 1630731), (39, 543577), (617, 34359), (881, 24063), (1851, 11453), (2643, 8021)]