78988000

素因数分解:

$2^5\times 5^3\times 7^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1$

素因数の和:83

約数の個数: 288

約数和(自身を含む): 250967808

約数和(自身を除く): 171979808

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 25, 26, 28, 31, 32, 35, 40, 49, 50, 52, 56, 62, 65, 70, 80, 91, 98, 100, 104, 112, 124, 125, 130, 140, 155, 160, 175, 182, 196, 200, 208, 217, 224, 245, 248, 250, 260, 280, 310, 325, 350, 364, 392, 400, 403, 416, 434, 455, 490, 496, 500, 520, 560, 620, 637, 650, 700, 728, 775, 784, 800, 806, 868, 875, 910, 980, 992, 1000, 1040, 1085, 1120, 1225, 1240, 1274, 1300, 1400, 1456, 1519, 1550, 1568, 1612, 1625, 1736, 1750, 1820, 1960, 2000, 2015, 2080, 2170, 2275, 2450, 2480, 2548, 2600, 2800, 2821, 2912, 3038, 3100, 3185, 3224, 3250, 3472, 3500, 3640, 3875, 3920, 4000, 4030, 4340, 4550, 4900, 4960, 5096, 5200, 5425, 5600, 5642, 6076, 6125, 6200, 6370, 6448, 6500, 6944, 7000, 7280, 7595, 7750, 7840, 8060, 8680, 9100, 9800, 10075, 10192, 10400, 10850, 11284, 11375, 12152, 12250, 12400, 12740, 12896, 13000, 14000, 14105, 14560, 15190, 15500, 15925, 16120, 17360, 18200, 19600, 19747, 20150, 20384, 21700, 22568, 22750, 24304, 24500, 24800, 25480, 26000, 27125, 28000, 28210, 30380, 31000, 31850, 32240, 34720, 36400, 37975, 39200, 39494, 40300, 43400, 45136, 45500, 48608, 49000, 50375, 50960, 52000, 54250, 56420, 60760, 62000, 63700, 64480, 70525, 72800, 75950, 78988, 79625, 80600, 86800, 90272, 91000, 98000, 98735, 100750, 101920, 108500, 112840, 121520, 124000, 127400, 141050, 151900, 157976, 159250, 161200, 173600, 182000, 189875, 196000, 197470, 201500, 217000, 225680, 243040, 254800, 282100, 303800, 315952, 318500, 322400, 352625, 364000, 379750, 394940, 403000, 434000, 451360, 493675, 509600, 564200, 607600, 631904, 637000, 705250, 759500, 789880, 806000, 868000, 987350, 1128400, 1215200, 1274000, 1410500, 1519000, 1579760, 1612000, 1974700, 2256800, 2468375, 2548000, 2821000, 3038000, 3159520, 3949400, 4936750, 5642000, 6076000, 7898800, 9873500, 11284000, 15797600, 19747000, 39494000, 78988000]

約数ペア:

[(1, 78988000), (2, 39494000), (4, 19747000), (5, 15797600), (7, 11284000), (8, 9873500), (10, 7898800), (13, 6076000), (14, 5642000), (16, 4936750), (20, 3949400), (25, 3159520), (26, 3038000), (28, 2821000), (31, 2548000), (32, 2468375), (35, 2256800), (40, 1974700), (49, 1612000), (50, 1579760), (52, 1519000), (56, 1410500), (62, 1274000), (65, 1215200), (70, 1128400), (80, 987350), (91, 868000), (98, 806000), (100, 789880), (104, 759500), (112, 705250), (124, 637000), (125, 631904), (130, 607600), (140, 564200), (155, 509600), (160, 493675), (175, 451360), (182, 434000), (196, 403000), (200, 394940), (208, 379750), (217, 364000), (224, 352625), (245, 322400), (248, 318500), (250, 315952), (260, 303800), (280, 282100), (310, 254800), (325, 243040), (350, 225680), (364, 217000), (392, 201500), (400, 197470), (403, 196000), (416, 189875), (434, 182000), (455, 173600), (490, 161200), (496, 159250), (500, 157976), (520, 151900), (560, 141050), (620, 127400), (637, 124000), (650, 121520), (700, 112840), (728, 108500), (775, 101920), (784, 100750), (800, 98735), (806, 98000), (868, 91000), (875, 90272), (910, 86800), (980, 80600), (992, 79625), (1000, 78988), (1040, 75950), (1085, 72800), (1120, 70525), (1225, 64480), (1240, 63700), (1274, 62000), (1300, 60760), (1400, 56420), (1456, 54250), (1519, 52000), (1550, 50960), (1568, 50375), (1612, 49000), (1625, 48608), (1736, 45500), (1750, 45136), (1820, 43400), (1960, 40300), (2000, 39494), (2015, 39200), (2080, 37975), (2170, 36400), (2275, 34720), (2450, 32240), (2480, 31850), (2548, 31000), (2600, 30380), (2800, 28210), (2821, 28000), (2912, 27125), (3038, 26000), (3100, 25480), (3185, 24800), (3224, 24500), (3250, 24304), (3472, 22750), (3500, 22568), (3640, 21700), (3875, 20384), (3920, 20150), (4000, 19747), (4030, 19600), (4340, 18200), (4550, 17360), (4900, 16120), (4960, 15925), (5096, 15500), (5200, 15190), (5425, 14560), (5600, 14105), (5642, 14000), (6076, 13000), (6125, 12896), (6200, 12740), (6370, 12400), (6448, 12250), (6500, 12152), (6944, 11375), (7000, 11284), (7280, 10850), (7595, 10400), (7750, 10192), (7840, 10075), (8060, 9800), (8680, 9100)]