28201275

素因数分解:

$3^2\times 5^2\times {\mathrm{125339}}^1$

素因数の和:125355

約数の個数: 18

約数和(自身を含む): 50512020

約数和(自身を除く): 22310745

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 125339, 376017, 626695, 1128051, 1880085, 3133475, 5640255, 9400425, 28201275]

約数ペア:

[(1, 28201275), (3, 9400425), (5, 5640255), (9, 3133475), (15, 1880085), (25, 1128051), (45, 626695), (75, 376017), (225, 125339)]