517400

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{199}}^1$

素因数の和:228

約数の個数: 48

約数和(自身を含む): 1302000

約数和(自身を除く): 784600

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 130, 199, 200, 260, 325, 398, 520, 650, 796, 995, 1300, 1592, 1990, 2587, 2600, 3980, 4975, 5174, 7960, 9950, 10348, 12935, 19900, 20696, 25870, 39800, 51740, 64675, 103480, 129350, 258700, 517400]

約数ペア:

[(1, 517400), (2, 258700), (4, 129350), (5, 103480), (8, 64675), (10, 51740), (13, 39800), (20, 25870), (25, 20696), (26, 19900), (40, 12935), (50, 10348), (52, 9950), (65, 7960), (100, 5174), (104, 4975), (130, 3980), (199, 2600), (200, 2587), (260, 1990), (325, 1592), (398, 1300), (520, 995), (650, 796)]