28122680

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{3533}}^1$

素因数の和:3743

約数の個数: 32

約数和(自身を含む): 63612000

約数和(自身を除く): 35489320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 3533, 3980, 7066, 7960, 14132, 17665, 28264, 35330, 70660, 141320, 703067, 1406134, 2812268, 3515335, 5624536, 7030670, 14061340, 28122680]

約数ペア:

[(1, 28122680), (2, 14061340), (4, 7030670), (5, 5624536), (8, 3515335), (10, 2812268), (20, 1406134), (40, 703067), (199, 141320), (398, 70660), (796, 35330), (995, 28264), (1592, 17665), (1990, 14132), (3533, 7960), (3980, 7066)]