28481250

素因数分解:

$2^1\times 3^1\times 5^5\times 7^2\times {\mathrm{31}}^1$

素因数の和:75

約数の個数: 144

約数和(自身を含む): 85494528

約数和(自身を除く): 57013278

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 25, 30, 31, 35, 42, 49, 50, 62, 70, 75, 93, 98, 105, 125, 147, 150, 155, 175, 186, 210, 217, 245, 250, 294, 310, 350, 375, 434, 465, 490, 525, 625, 651, 735, 750, 775, 875, 930, 1050, 1085, 1225, 1250, 1302, 1470, 1519, 1550, 1750, 1875, 2170, 2325, 2450, 2625, 3038, 3125, 3255, 3675, 3750, 3875, 4375, 4557, 4650, 5250, 5425, 6125, 6250, 6510, 7350, 7595, 7750, 8750, 9114, 9375, 10850, 11625, 12250, 13125, 15190, 16275, 18375, 18750, 19375, 21875, 22785, 23250, 26250, 27125, 30625, 32550, 36750, 37975, 38750, 43750, 45570, 54250, 58125, 61250, 65625, 75950, 81375, 91875, 96875, 113925, 116250, 131250, 135625, 153125, 162750, 183750, 189875, 193750, 227850, 271250, 290625, 306250, 379750, 406875, 459375, 569625, 581250, 678125, 813750, 918750, 949375, 1139250, 1356250, 1898750, 2034375, 2848125, 4068750, 4746875, 5696250, 9493750, 14240625, 28481250]

約数ペア:

[(1, 28481250), (2, 14240625), (3, 9493750), (5, 5696250), (6, 4746875), (7, 4068750), (10, 2848125), (14, 2034375), (15, 1898750), (21, 1356250), (25, 1139250), (30, 949375), (31, 918750), (35, 813750), (42, 678125), (49, 581250), (50, 569625), (62, 459375), (70, 406875), (75, 379750), (93, 306250), (98, 290625), (105, 271250), (125, 227850), (147, 193750), (150, 189875), (155, 183750), (175, 162750), (186, 153125), (210, 135625), (217, 131250), (245, 116250), (250, 113925), (294, 96875), (310, 91875), (350, 81375), (375, 75950), (434, 65625), (465, 61250), (490, 58125), (525, 54250), (625, 45570), (651, 43750), (735, 38750), (750, 37975), (775, 36750), (875, 32550), (930, 30625), (1050, 27125), (1085, 26250), (1225, 23250), (1250, 22785), (1302, 21875), (1470, 19375), (1519, 18750), (1550, 18375), (1750, 16275), (1875, 15190), (2170, 13125), (2325, 12250), (2450, 11625), (2625, 10850), (3038, 9375), (3125, 9114), (3255, 8750), (3675, 7750), (3750, 7595), (3875, 7350), (4375, 6510), (4557, 6250), (4650, 6125), (5250, 5425)]