278889175

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{131}}^1$

素因数の和:280

約数の個数: 48

約数和(自身を含む): 373976064

約数和(自身を除く): 95086889

約数列:

[1, 5, 25, 31, 41, 67, 131, 155, 205, 335, 655, 775, 1025, 1271, 1675, 2077, 2747, 3275, 4061, 5371, 6355, 8777, 10385, 13735, 20305, 26855, 31775, 43885, 51925, 68675, 85157, 101525, 134275, 166501, 219425, 272087, 359857, 425785, 832505, 1360435, 1799285, 2128925, 4162525, 6802175, 8996425, 11155567, 55777835, 278889175]

約数ペア:

[(1, 278889175), (5, 55777835), (25, 11155567), (31, 8996425), (41, 6802175), (67, 4162525), (131, 2128925), (155, 1799285), (205, 1360435), (335, 832505), (655, 425785), (775, 359857), (1025, 272087), (1271, 219425), (1675, 166501), (2077, 134275), (2747, 101525), (3275, 85157), (4061, 68675), (5371, 51925), (6355, 43885), (8777, 31775), (10385, 26855), (13735, 20305)]