87081475

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{20611}}^1$

素因数の和:20647

約数の個数: 18

約数和(自身を含む): 116931876

約数和(自身を除く): 29850401

約数列:

[1, 5, 13, 25, 65, 169, 325, 845, 4225, 20611, 103055, 267943, 515275, 1339715, 3483259, 6698575, 17416295, 87081475]

約数ペア:

[(1, 87081475), (5, 17416295), (13, 6698575), (25, 3483259), (65, 1339715), (169, 515275), (325, 267943), (845, 103055), (4225, 20611)]