279500

素因数分解:

$2^2\times 5^3\times {\mathrm{13}}^1\times {\mathrm{43}}^1$

素因数の和:75

約数の個数: 48

約数和(自身を含む): 672672

約数和(自身を除く): 393172

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 43, 50, 52, 65, 86, 100, 125, 130, 172, 215, 250, 260, 325, 430, 500, 559, 650, 860, 1075, 1118, 1300, 1625, 2150, 2236, 2795, 3250, 4300, 5375, 5590, 6500, 10750, 11180, 13975, 21500, 27950, 55900, 69875, 139750, 279500]

約数ペア:

[(1, 279500), (2, 139750), (4, 69875), (5, 55900), (10, 27950), (13, 21500), (20, 13975), (25, 11180), (26, 10750), (43, 6500), (50, 5590), (52, 5375), (65, 4300), (86, 3250), (100, 2795), (125, 2236), (130, 2150), (172, 1625), (215, 1300), (250, 1118), (260, 1075), (325, 860), (430, 650), (500, 559)]