2391475

素因数分解:

$5^2\times {\mathrm{17}}^2\times {\mathrm{331}}^1$

素因数の和:375

約数の個数: 18

約数和(自身を含む): 3159644

約数和(自身を除く): 768169

約数列:

[1, 5, 17, 25, 85, 289, 331, 425, 1445, 1655, 5627, 7225, 8275, 28135, 95659, 140675, 478295, 2391475]

約数ペア:

[(1, 2391475), (5, 478295), (17, 140675), (25, 95659), (85, 28135), (289, 8275), (331, 7225), (425, 5627), (1445, 1655)]