20386977

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{79}}^1\times {\mathrm{509}}^1$

素因数の和:617

約数の個数: 24

約数和(自身を含む): 29865600

約数和(自身を除く): 9478623

約数列:

[1, 3, 13, 39, 79, 169, 237, 507, 509, 1027, 1527, 3081, 6617, 13351, 19851, 40053, 40211, 86021, 120633, 258063, 522743, 1568229, 6795659, 20386977]

約数ペア:

[(1, 20386977), (3, 6795659), (13, 1568229), (39, 522743), (79, 258063), (169, 120633), (237, 86021), (507, 40211), (509, 40053), (1027, 19851), (1527, 13351), (3081, 6617)]