28685775

素因数分解:

$3^1\times 5^2\times {\mathrm{71}}^1\times {\mathrm{5387}}^1$

素因数の和:5471

約数の個数: 24

約数和(自身を含む): 48104064

約数和(自身を除く): 19418289

約数列:

[1, 3, 5, 15, 25, 71, 75, 213, 355, 1065, 1775, 5325, 5387, 16161, 26935, 80805, 134675, 382477, 404025, 1147431, 1912385, 5737155, 9561925, 28685775]

約数ペア:

[(1, 28685775), (3, 9561925), (5, 5737155), (15, 1912385), (25, 1147431), (71, 404025), (75, 382477), (213, 134675), (355, 80805), (1065, 26935), (1775, 16161), (5325, 5387)]