28721775

素因数分解:

$3^1\times 5^2\times {\mathrm{113}}^1\times {\mathrm{3389}}^1$

素因数の和:3515

約数の個数: 24

約数和(自身を含む): 47921040

約数和(自身を除く): 19199265

約数列:

[1, 3, 5, 15, 25, 75, 113, 339, 565, 1695, 2825, 3389, 8475, 10167, 16945, 50835, 84725, 254175, 382957, 1148871, 1914785, 5744355, 9573925, 28721775]

約数ペア:

[(1, 28721775), (3, 9573925), (5, 5744355), (15, 1914785), (25, 1148871), (75, 382957), (113, 254175), (339, 84725), (565, 50835), (1695, 16945), (2825, 10167), (3389, 8475)]