413920

素因数分解:

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

素因数の和:227

約数の個数: 48

約数和(自身を含む): 1058400

約数和(自身を除く): 644480

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 199, 208, 260, 398, 416, 520, 796, 995, 1040, 1592, 1990, 2080, 2587, 3184, 3980, 5174, 6368, 7960, 10348, 12935, 15920, 20696, 25870, 31840, 41392, 51740, 82784, 103480, 206960, 413920]

約数ペア:

[(1, 413920), (2, 206960), (4, 103480), (5, 82784), (8, 51740), (10, 41392), (13, 31840), (16, 25870), (20, 20696), (26, 15920), (32, 12935), (40, 10348), (52, 7960), (65, 6368), (80, 5174), (104, 3980), (130, 3184), (160, 2587), (199, 2080), (208, 1990), (260, 1592), (398, 1040), (416, 995), (520, 796)]