28211775

素因数分解:

$3^1\times 5^2\times {\mathrm{193}}^1\times {\mathrm{1949}}^1$

素因数の和:2155

約数の個数: 24

約数和(自身を含む): 46909200

約数和(自身を除く): 18697425

約数列:

[1, 3, 5, 15, 25, 75, 193, 579, 965, 1949, 2895, 4825, 5847, 9745, 14475, 29235, 48725, 146175, 376157, 1128471, 1880785, 5642355, 9403925, 28211775]

約数ペア:

[(1, 28211775), (3, 9403925), (5, 5642355), (15, 1880785), (25, 1128471), (75, 376157), (193, 146175), (579, 48725), (965, 29235), (1949, 14475), (2895, 9745), (4825, 5847)]