81809000

素因数分解:

$2^3\times 5^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1$

素因数の和:101

約数の個数: 256

約数和(自身を含む): 251596800

約数和(自身を除く): 169787800

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 25, 26, 28, 29, 31, 35, 40, 50, 52, 56, 58, 62, 65, 70, 91, 100, 104, 116, 124, 125, 130, 140, 145, 155, 175, 182, 200, 203, 217, 232, 248, 250, 260, 280, 290, 310, 325, 350, 364, 377, 403, 406, 434, 455, 500, 520, 580, 620, 650, 700, 725, 728, 754, 775, 806, 812, 868, 875, 899, 910, 1000, 1015, 1085, 1160, 1240, 1300, 1400, 1450, 1508, 1550, 1612, 1624, 1625, 1736, 1750, 1798, 1820, 1885, 2015, 2030, 2170, 2275, 2600, 2639, 2821, 2900, 3016, 3100, 3224, 3250, 3500, 3596, 3625, 3640, 3770, 3875, 4030, 4060, 4340, 4495, 4550, 5075, 5278, 5425, 5642, 5800, 6200, 6293, 6500, 7000, 7192, 7250, 7540, 7750, 8060, 8120, 8680, 8990, 9100, 9425, 10075, 10150, 10556, 10850, 11284, 11375, 11687, 12586, 13000, 13195, 14105, 14500, 15080, 15500, 16120, 17980, 18200, 18850, 20150, 20300, 21112, 21700, 22475, 22568, 22750, 23374, 25172, 25375, 26390, 27125, 28210, 29000, 31000, 31465, 35960, 37700, 40300, 40600, 43400, 44950, 45500, 46748, 47125, 50344, 50375, 50750, 52780, 54250, 56420, 58435, 62930, 65975, 70525, 75400, 80600, 81809, 89900, 91000, 93496, 94250, 100750, 101500, 105560, 108500, 112375, 112840, 116870, 125860, 131950, 141050, 157325, 163618, 179800, 188500, 201500, 203000, 217000, 224750, 233740, 251720, 263900, 282100, 292175, 314650, 327236, 329875, 352625, 377000, 403000, 409045, 449500, 467480, 527800, 564200, 584350, 629300, 654472, 659750, 705250, 786625, 818090, 899000, 1168700, 1258600, 1319500, 1410500, 1460875, 1573250, 1636180, 2045225, 2337400, 2639000, 2821000, 2921750, 3146500, 3272360, 4090450, 5843500, 6293000, 8180900, 10226125, 11687000, 16361800, 20452250, 40904500, 81809000]

約数ペア:

[(1, 81809000), (2, 40904500), (4, 20452250), (5, 16361800), (7, 11687000), (8, 10226125), (10, 8180900), (13, 6293000), (14, 5843500), (20, 4090450), (25, 3272360), (26, 3146500), (28, 2921750), (29, 2821000), (31, 2639000), (35, 2337400), (40, 2045225), (50, 1636180), (52, 1573250), (56, 1460875), (58, 1410500), (62, 1319500), (65, 1258600), (70, 1168700), (91, 899000), (100, 818090), (104, 786625), (116, 705250), (124, 659750), (125, 654472), (130, 629300), (140, 584350), (145, 564200), (155, 527800), (175, 467480), (182, 449500), (200, 409045), (203, 403000), (217, 377000), (232, 352625), (248, 329875), (250, 327236), (260, 314650), (280, 292175), (290, 282100), (310, 263900), (325, 251720), (350, 233740), (364, 224750), (377, 217000), (403, 203000), (406, 201500), (434, 188500), (455, 179800), (500, 163618), (520, 157325), (580, 141050), (620, 131950), (650, 125860), (700, 116870), (725, 112840), (728, 112375), (754, 108500), (775, 105560), (806, 101500), (812, 100750), (868, 94250), (875, 93496), (899, 91000), (910, 89900), (1000, 81809), (1015, 80600), (1085, 75400), (1160, 70525), (1240, 65975), (1300, 62930), (1400, 58435), (1450, 56420), (1508, 54250), (1550, 52780), (1612, 50750), (1624, 50375), (1625, 50344), (1736, 47125), (1750, 46748), (1798, 45500), (1820, 44950), (1885, 43400), (2015, 40600), (2030, 40300), (2170, 37700), (2275, 35960), (2600, 31465), (2639, 31000), (2821, 29000), (2900, 28210), (3016, 27125), (3100, 26390), (3224, 25375), (3250, 25172), (3500, 23374), (3596, 22750), (3625, 22568), (3640, 22475), (3770, 21700), (3875, 21112), (4030, 20300), (4060, 20150), (4340, 18850), (4495, 18200), (4550, 17980), (5075, 16120), (5278, 15500), (5425, 15080), (5642, 14500), (5800, 14105), (6200, 13195), (6293, 13000), (6500, 12586), (7000, 11687), (7192, 11375), (7250, 11284), (7540, 10850), (7750, 10556), (8060, 10150), (8120, 10075), (8680, 9425), (8990, 9100)]