7978625

素因数分解:

$5^3\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1$

素因数の和:146

約数の個数: 32

約数和(自身を含む): 10782720

約数和(自身を除く): 2804095

約数列:

[1, 5, 25, 29, 31, 71, 125, 145, 155, 355, 725, 775, 899, 1775, 2059, 2201, 3625, 3875, 4495, 8875, 10295, 11005, 22475, 51475, 55025, 63829, 112375, 257375, 275125, 319145, 1595725, 7978625]

約数ペア:

[(1, 7978625), (5, 1595725), (25, 319145), (29, 275125), (31, 257375), (71, 112375), (125, 63829), (145, 55025), (155, 51475), (355, 22475), (725, 11005), (775, 10295), (899, 8875), (1775, 4495), (2059, 3875), (2201, 3625)]