28827775

素因数分解:

$5^2\times {\mathrm{71}}^1\times {\mathrm{109}}^1\times {\mathrm{149}}^1$

素因数の和:339

約数の個数: 24

約数和(自身を含む): 36828000

約数和(自身を除く): 8000225

約数列:

[1, 5, 25, 71, 109, 149, 355, 545, 745, 1775, 2725, 3725, 7739, 10579, 16241, 38695, 52895, 81205, 193475, 264475, 406025, 1153111, 5765555, 28827775]

約数ペア:

[(1, 28827775), (5, 5765555), (25, 1153111), (71, 406025), (109, 264475), (149, 193475), (355, 81205), (545, 52895), (745, 38695), (1775, 16241), (2725, 10579), (3725, 7739)]