31728560

素因数分解:

$2^4\times 5^1\times {\mathrm{199}}^1\times {\mathrm{1993}}^1$

素因数の和:2205

約数の個数: 40

約数和(自身を含む): 74176800

約数和(自身を除く): 42448240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199, 398, 796, 995, 1592, 1990, 1993, 3184, 3980, 3986, 7960, 7972, 9965, 15920, 15944, 19930, 31888, 39860, 79720, 159440, 396607, 793214, 1586428, 1983035, 3172856, 3966070, 6345712, 7932140, 15864280, 31728560]

約数ペア:

[(1, 31728560), (2, 15864280), (4, 7932140), (5, 6345712), (8, 3966070), (10, 3172856), (16, 1983035), (20, 1586428), (40, 793214), (80, 396607), (199, 159440), (398, 79720), (796, 39860), (995, 31888), (1592, 19930), (1990, 15944), (1993, 15920), (3184, 9965), (3980, 7972), (3986, 7960)]