128525525

素因数分解:

$5^2\times {\mathrm{17}}^2\times {\mathrm{17789}}^1$

素因数の和:17833

約数の個数: 18

約数和(自身を含む): 169307430

約数和(自身を除く): 40781905

約数列:

[1, 5, 17, 25, 85, 289, 425, 1445, 7225, 17789, 88945, 302413, 444725, 1512065, 5141021, 7560325, 25705105, 128525525]

約数ペア:

[(1, 128525525), (5, 25705105), (17, 7560325), (25, 5141021), (85, 1512065), (289, 444725), (425, 302413), (1445, 88945), (7225, 17789)]