28720675

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{199}}^1\times {\mathrm{251}}^1$

素因数の和:483

約数の個数: 24

約数和(自身を含む): 37497600

約数和(自身を除く): 8776925

約数列:

[1, 5, 23, 25, 115, 199, 251, 575, 995, 1255, 4577, 4975, 5773, 6275, 22885, 28865, 49949, 114425, 144325, 249745, 1148827, 1248725, 5744135, 28720675]

約数ペア:

[(1, 28720675), (5, 5744135), (23, 1248725), (25, 1148827), (115, 249745), (199, 144325), (251, 114425), (575, 49949), (995, 28865), (1255, 22885), (4577, 6275), (4975, 5773)]