20289500

素因数分解:

$2^2\times 5^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1$

素因数の和:85

約数の個数: 192

約数和(自身を含む): 60383232

約数和(自身を除く): 40093732

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 17, 20, 22, 25, 28, 31, 34, 35, 44, 50, 55, 62, 68, 70, 77, 85, 100, 110, 119, 124, 125, 140, 154, 155, 170, 175, 187, 217, 220, 238, 250, 275, 308, 310, 340, 341, 350, 374, 385, 425, 434, 476, 500, 527, 550, 595, 620, 682, 700, 748, 770, 775, 850, 868, 875, 935, 1054, 1085, 1100, 1190, 1309, 1364, 1375, 1540, 1550, 1700, 1705, 1750, 1870, 1925, 2108, 2125, 2170, 2380, 2387, 2618, 2635, 2750, 2975, 3100, 3410, 3500, 3689, 3740, 3850, 3875, 4250, 4340, 4675, 4774, 5236, 5270, 5425, 5500, 5797, 5950, 6545, 6820, 7378, 7700, 7750, 8500, 8525, 9350, 9548, 9625, 10540, 10850, 11594, 11900, 11935, 13090, 13175, 14756, 14875, 15500, 17050, 18445, 18700, 19250, 21700, 23188, 23375, 23870, 26180, 26350, 27125, 28985, 29750, 32725, 34100, 36890, 38500, 40579, 42625, 46750, 47740, 52700, 54250, 57970, 59500, 59675, 65450, 65875, 73780, 81158, 85250, 92225, 93500, 108500, 115940, 119350, 130900, 131750, 144925, 162316, 163625, 170500, 184450, 202895, 238700, 263500, 289850, 298375, 327250, 368900, 405790, 461125, 579700, 596750, 654500, 724625, 811580, 922250, 1014475, 1193500, 1449250, 1844500, 2028950, 2898500, 4057900, 5072375, 10144750, 20289500]

約数ペア:

[(1, 20289500), (2, 10144750), (4, 5072375), (5, 4057900), (7, 2898500), (10, 2028950), (11, 1844500), (14, 1449250), (17, 1193500), (20, 1014475), (22, 922250), (25, 811580), (28, 724625), (31, 654500), (34, 596750), (35, 579700), (44, 461125), (50, 405790), (55, 368900), (62, 327250), (68, 298375), (70, 289850), (77, 263500), (85, 238700), (100, 202895), (110, 184450), (119, 170500), (124, 163625), (125, 162316), (140, 144925), (154, 131750), (155, 130900), (170, 119350), (175, 115940), (187, 108500), (217, 93500), (220, 92225), (238, 85250), (250, 81158), (275, 73780), (308, 65875), (310, 65450), (340, 59675), (341, 59500), (350, 57970), (374, 54250), (385, 52700), (425, 47740), (434, 46750), (476, 42625), (500, 40579), (527, 38500), (550, 36890), (595, 34100), (620, 32725), (682, 29750), (700, 28985), (748, 27125), (770, 26350), (775, 26180), (850, 23870), (868, 23375), (875, 23188), (935, 21700), (1054, 19250), (1085, 18700), (1100, 18445), (1190, 17050), (1309, 15500), (1364, 14875), (1375, 14756), (1540, 13175), (1550, 13090), (1700, 11935), (1705, 11900), (1750, 11594), (1870, 10850), (1925, 10540), (2108, 9625), (2125, 9548), (2170, 9350), (2380, 8525), (2387, 8500), (2618, 7750), (2635, 7700), (2750, 7378), (2975, 6820), (3100, 6545), (3410, 5950), (3500, 5797), (3689, 5500), (3740, 5425), (3850, 5270), (3875, 5236), (4250, 4774), (4340, 4675)]