15864280

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{1993}}^1$

素因数の和:2203

約数の個数: 32

約数和(自身を含む): 35892000

約数和(自身を除く): 20027720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 1993, 3980, 3986, 7960, 7972, 9965, 15944, 19930, 39860, 79720, 396607, 793214, 1586428, 1983035, 3172856, 3966070, 7932140, 15864280]

約数ペア:

[(1, 15864280), (2, 7932140), (4, 3966070), (5, 3172856), (8, 1983035), (10, 1586428), (20, 793214), (40, 396607), (199, 79720), (398, 39860), (796, 19930), (995, 15944), (1592, 9965), (1990, 7972), (1993, 7960), (3980, 3986)]