278315500

素因数分解:

$2^2\times 5^3\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{239}}^1$

素因数の和:412

約数の個数: 96

約数和(自身を含む): 651006720

約数和(自身を除く): 372691220

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 50, 68, 85, 100, 125, 137, 170, 239, 250, 274, 340, 425, 478, 500, 548, 685, 850, 956, 1195, 1370, 1700, 2125, 2329, 2390, 2740, 3425, 4063, 4250, 4658, 4780, 5975, 6850, 8126, 8500, 9316, 11645, 11950, 13700, 16252, 17125, 20315, 23290, 23900, 29875, 32743, 34250, 40630, 46580, 58225, 59750, 65486, 68500, 81260, 101575, 116450, 119500, 130972, 163715, 203150, 232900, 291125, 327430, 406300, 507875, 556631, 582250, 654860, 818575, 1015750, 1113262, 1164500, 1637150, 2031500, 2226524, 2783155, 3274300, 4092875, 5566310, 8185750, 11132620, 13915775, 16371500, 27831550, 55663100, 69578875, 139157750, 278315500]

約数ペア:

[(1, 278315500), (2, 139157750), (4, 69578875), (5, 55663100), (10, 27831550), (17, 16371500), (20, 13915775), (25, 11132620), (34, 8185750), (50, 5566310), (68, 4092875), (85, 3274300), (100, 2783155), (125, 2226524), (137, 2031500), (170, 1637150), (239, 1164500), (250, 1113262), (274, 1015750), (340, 818575), (425, 654860), (478, 582250), (500, 556631), (548, 507875), (685, 406300), (850, 327430), (956, 291125), (1195, 232900), (1370, 203150), (1700, 163715), (2125, 130972), (2329, 119500), (2390, 116450), (2740, 101575), (3425, 81260), (4063, 68500), (4250, 65486), (4658, 59750), (4780, 58225), (5975, 46580), (6850, 40630), (8126, 34250), (8500, 32743), (9316, 29875), (11645, 23900), (11950, 23290), (13700, 20315), (16252, 17125)]