121780040

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{15299}}^1$

素因数の和:15509

約数の個数: 32

約数和(自身を含む): 275400000

約数和(自身を除く): 153619960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 3980, 7960, 15299, 30598, 61196, 76495, 122392, 152990, 305980, 611960, 3044501, 6089002, 12178004, 15222505, 24356008, 30445010, 60890020, 121780040]

約数ペア:

[(1, 121780040), (2, 60890020), (4, 30445010), (5, 24356008), (8, 15222505), (10, 12178004), (20, 6089002), (40, 3044501), (199, 611960), (398, 305980), (796, 152990), (995, 122392), (1592, 76495), (1990, 61196), (3980, 30598), (7960, 15299)]