28389340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{1019}}^1$

素因数の和:1234

約数の個数: 48

約数和(自身を含む): 68544000

約数和(自身を除く): 40154660

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 199, 398, 796, 995, 1019, 1393, 1990, 2038, 2786, 3980, 4076, 5095, 5572, 6965, 7133, 10190, 13930, 14266, 20380, 27860, 28532, 35665, 71330, 142660, 202781, 405562, 811124, 1013905, 1419467, 2027810, 2838934, 4055620, 5677868, 7097335, 14194670, 28389340]

約数ペア:

[(1, 28389340), (2, 14194670), (4, 7097335), (5, 5677868), (7, 4055620), (10, 2838934), (14, 2027810), (20, 1419467), (28, 1013905), (35, 811124), (70, 405562), (140, 202781), (199, 142660), (398, 71330), (796, 35665), (995, 28532), (1019, 27860), (1393, 20380), (1990, 14266), (2038, 13930), (2786, 10190), (3980, 7133), (4076, 6965), (5095, 5572)]