1285540

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1$

素因数の和:244

約数の個数: 48

約数和(自身を含む): 3024000

約数和(自身を除く): 1738460

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 68, 76, 85, 95, 170, 190, 199, 323, 340, 380, 398, 646, 796, 995, 1292, 1615, 1990, 3230, 3383, 3781, 3980, 6460, 6766, 7562, 13532, 15124, 16915, 18905, 33830, 37810, 64277, 67660, 75620, 128554, 257108, 321385, 642770, 1285540]

約数ペア:

[(1, 1285540), (2, 642770), (4, 321385), (5, 257108), (10, 128554), (17, 75620), (19, 67660), (20, 64277), (34, 37810), (38, 33830), (68, 18905), (76, 16915), (85, 15124), (95, 13532), (170, 7562), (190, 6766), (199, 6460), (323, 3980), (340, 3781), (380, 3383), (398, 3230), (646, 1990), (796, 1615), (995, 1292)]