28015220

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{7039}}^1$

素因数の和:7247

約数の個数: 24

約数和(自身を含む): 59136000

約数和(自身を除く): 31120780

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 3980, 7039, 14078, 28156, 35195, 70390, 140780, 1400761, 2801522, 5603044, 7003805, 14007610, 28015220]

約数ペア:

[(1, 28015220), (2, 14007610), (4, 7003805), (5, 5603044), (10, 2801522), (20, 1400761), (199, 140780), (398, 70390), (796, 35195), (995, 28156), (1990, 14078), (3980, 7039)]