28505775

素因数分解:

$3^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{8839}}^1$

素因数の和:8895

約数の個数: 24

約数和(自身を含む): 48231040

約数和(自身を除く): 19725265

約数列:

[1, 3, 5, 15, 25, 43, 75, 129, 215, 645, 1075, 3225, 8839, 26517, 44195, 132585, 220975, 380077, 662925, 1140231, 1900385, 5701155, 9501925, 28505775]

約数ペア:

[(1, 28505775), (3, 9501925), (5, 5701155), (15, 1900385), (25, 1140231), (43, 662925), (75, 380077), (129, 220975), (215, 132585), (645, 44195), (1075, 26517), (3225, 8839)]