248852500

素因数分解:

$2^2\times 5^4\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1$

素因数の和:100

約数の個数: 180

約数和(自身を含む): 640295040

約数和(自身を除く): 391442540

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 25, 26, 31, 38, 50, 52, 62, 65, 76, 95, 100, 124, 125, 130, 155, 169, 190, 247, 250, 260, 310, 325, 338, 380, 403, 475, 494, 500, 589, 620, 625, 650, 676, 775, 806, 845, 950, 988, 1178, 1235, 1250, 1300, 1550, 1612, 1625, 1690, 1900, 2015, 2356, 2375, 2470, 2500, 2945, 3100, 3211, 3250, 3380, 3875, 4030, 4225, 4750, 4940, 5239, 5890, 6175, 6422, 6500, 7657, 7750, 8060, 8125, 8450, 9500, 10075, 10478, 11780, 11875, 12350, 12844, 14725, 15314, 15500, 16055, 16250, 16900, 19375, 20150, 20956, 21125, 23750, 24700, 26195, 29450, 30628, 30875, 32110, 32500, 38285, 38750, 40300, 42250, 47500, 50375, 52390, 58900, 61750, 64220, 73625, 76570, 77500, 80275, 84500, 99541, 100750, 104780, 105625, 123500, 130975, 147250, 153140, 154375, 160550, 191425, 199082, 201500, 211250, 251875, 261950, 294500, 308750, 321100, 368125, 382850, 398164, 401375, 422500, 497705, 503750, 523900, 617500, 654875, 736250, 765700, 802750, 957125, 995410, 1007500, 1309750, 1472500, 1605500, 1914250, 1990820, 2006875, 2488525, 2619500, 3274375, 3828500, 4013750, 4785625, 4977050, 6548750, 8027500, 9571250, 9954100, 12442625, 13097500, 19142500, 24885250, 49770500, 62213125, 124426250, 248852500]

約数ペア:

[(1, 248852500), (2, 124426250), (4, 62213125), (5, 49770500), (10, 24885250), (13, 19142500), (19, 13097500), (20, 12442625), (25, 9954100), (26, 9571250), (31, 8027500), (38, 6548750), (50, 4977050), (52, 4785625), (62, 4013750), (65, 3828500), (76, 3274375), (95, 2619500), (100, 2488525), (124, 2006875), (125, 1990820), (130, 1914250), (155, 1605500), (169, 1472500), (190, 1309750), (247, 1007500), (250, 995410), (260, 957125), (310, 802750), (325, 765700), (338, 736250), (380, 654875), (403, 617500), (475, 523900), (494, 503750), (500, 497705), (589, 422500), (620, 401375), (625, 398164), (650, 382850), (676, 368125), (775, 321100), (806, 308750), (845, 294500), (950, 261950), (988, 251875), (1178, 211250), (1235, 201500), (1250, 199082), (1300, 191425), (1550, 160550), (1612, 154375), (1625, 153140), (1690, 147250), (1900, 130975), (2015, 123500), (2356, 105625), (2375, 104780), (2470, 100750), (2500, 99541), (2945, 84500), (3100, 80275), (3211, 77500), (3250, 76570), (3380, 73625), (3875, 64220), (4030, 61750), (4225, 58900), (4750, 52390), (4940, 50375), (5239, 47500), (5890, 42250), (6175, 40300), (6422, 38750), (6500, 38285), (7657, 32500), (7750, 32110), (8060, 30875), (8125, 30628), (8450, 29450), (9500, 26195), (10075, 24700), (10478, 23750), (11780, 21125), (11875, 20956), (12350, 20150), (12844, 19375), (14725, 16900), (15314, 16250), (15500, 16055)]