19870175

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{4703}}^1$

素因数の和:4739

約数の個数: 18

約数和(自身を含む): 26685792

約数和(自身を除く): 6815617

約数列:

[1, 5, 13, 25, 65, 169, 325, 845, 4225, 4703, 23515, 61139, 117575, 305695, 794807, 1528475, 3974035, 19870175]

約数ペア:

[(1, 19870175), (5, 3974035), (13, 1528475), (25, 794807), (65, 305695), (169, 117575), (325, 61139), (845, 23515), (4225, 4703)]