81907375

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{839}}^1$

素因数の和:936

約数の個数: 32

約数和(自身を含む): 113218560

約数和(自身を除く): 31311185

約数列:

[1, 5, 11, 25, 55, 71, 125, 275, 355, 781, 839, 1375, 1775, 3905, 4195, 8875, 9229, 19525, 20975, 46145, 59569, 97625, 104875, 230725, 297845, 655259, 1153625, 1489225, 3276295, 7446125, 16381475, 81907375]

約数ペア:

[(1, 81907375), (5, 16381475), (11, 7446125), (25, 3276295), (55, 1489225), (71, 1153625), (125, 655259), (275, 297845), (355, 230725), (781, 104875), (839, 97625), (1375, 59569), (1775, 46145), (3905, 20975), (4195, 19525), (8875, 9229)]