8121325

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{197}}^1$

素因数の和:321

約数の個数: 24

約数和(自身を含む): 10827432

約数和(自身を除く): 2706107

約数列:

[1, 5, 17, 25, 85, 97, 197, 425, 485, 985, 1649, 2425, 3349, 4925, 8245, 16745, 19109, 41225, 83725, 95545, 324853, 477725, 1624265, 8121325]

約数ペア:

[(1, 8121325), (5, 1624265), (17, 477725), (25, 324853), (85, 95545), (97, 83725), (197, 41225), (425, 19109), (485, 16745), (985, 8245), (1649, 4925), (2425, 3349)]