278687500

素因数分解:

$2^2\times 5^6\times 7^3\times {\mathrm{13}}^1$

素因数の和:68

約数の個数: 168

約数和(自身を含む): 765615200

約数和(自身を除く): 486927700

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 25, 26, 28, 35, 49, 50, 52, 65, 70, 91, 98, 100, 125, 130, 140, 175, 182, 196, 245, 250, 260, 325, 343, 350, 364, 455, 490, 500, 625, 637, 650, 686, 700, 875, 910, 980, 1225, 1250, 1274, 1300, 1372, 1625, 1715, 1750, 1820, 2275, 2450, 2500, 2548, 3125, 3185, 3250, 3430, 3500, 4375, 4459, 4550, 4900, 6125, 6250, 6370, 6500, 6860, 8125, 8575, 8750, 8918, 9100, 11375, 12250, 12500, 12740, 15625, 15925, 16250, 17150, 17500, 17836, 21875, 22295, 22750, 24500, 30625, 31250, 31850, 32500, 34300, 40625, 42875, 43750, 44590, 45500, 56875, 61250, 62500, 63700, 79625, 81250, 85750, 87500, 89180, 109375, 111475, 113750, 122500, 153125, 159250, 162500, 171500, 203125, 214375, 218750, 222950, 227500, 284375, 306250, 318500, 398125, 406250, 428750, 437500, 445900, 557375, 568750, 612500, 765625, 796250, 812500, 857500, 1071875, 1114750, 1137500, 1421875, 1531250, 1592500, 1990625, 2143750, 2229500, 2786875, 2843750, 3062500, 3981250, 4287500, 5359375, 5573750, 5687500, 7962500, 9953125, 10718750, 11147500, 13934375, 19906250, 21437500, 27868750, 39812500, 55737500, 69671875, 139343750, 278687500]

約数ペア:

[(1, 278687500), (2, 139343750), (4, 69671875), (5, 55737500), (7, 39812500), (10, 27868750), (13, 21437500), (14, 19906250), (20, 13934375), (25, 11147500), (26, 10718750), (28, 9953125), (35, 7962500), (49, 5687500), (50, 5573750), (52, 5359375), (65, 4287500), (70, 3981250), (91, 3062500), (98, 2843750), (100, 2786875), (125, 2229500), (130, 2143750), (140, 1990625), (175, 1592500), (182, 1531250), (196, 1421875), (245, 1137500), (250, 1114750), (260, 1071875), (325, 857500), (343, 812500), (350, 796250), (364, 765625), (455, 612500), (490, 568750), (500, 557375), (625, 445900), (637, 437500), (650, 428750), (686, 406250), (700, 398125), (875, 318500), (910, 306250), (980, 284375), (1225, 227500), (1250, 222950), (1274, 218750), (1300, 214375), (1372, 203125), (1625, 171500), (1715, 162500), (1750, 159250), (1820, 153125), (2275, 122500), (2450, 113750), (2500, 111475), (2548, 109375), (3125, 89180), (3185, 87500), (3250, 85750), (3430, 81250), (3500, 79625), (4375, 63700), (4459, 62500), (4550, 61250), (4900, 56875), (6125, 45500), (6250, 44590), (6370, 43750), (6500, 42875), (6860, 40625), (8125, 34300), (8575, 32500), (8750, 31850), (8918, 31250), (9100, 30625), (11375, 24500), (12250, 22750), (12500, 22295), (12740, 21875), (15625, 17836), (15925, 17500), (16250, 17150)]