206960

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1$

素因数の和:225

約数の個数: 40

約数和(自身を含む): 520800

約数和(自身を除く): 313840

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 199, 208, 260, 398, 520, 796, 995, 1040, 1592, 1990, 2587, 3184, 3980, 5174, 7960, 10348, 12935, 15920, 20696, 25870, 41392, 51740, 103480, 206960]

約数ペア:

[(1, 206960), (2, 103480), (4, 51740), (5, 41392), (8, 25870), (10, 20696), (13, 15920), (16, 12935), (20, 10348), (26, 7960), (40, 5174), (52, 3980), (65, 3184), (80, 2587), (104, 1990), (130, 1592), (199, 1040), (208, 995), (260, 796), (398, 520)]