20615000

素因数分解:

$2^3\times 5^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1$

素因数の和:83

約数の個数: 160

約数和(自身を含む): 59980800

約数和(自身を除く): 39365800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 25, 28, 31, 35, 38, 40, 50, 56, 62, 70, 76, 95, 100, 124, 125, 133, 140, 152, 155, 175, 190, 200, 217, 248, 250, 266, 280, 310, 350, 380, 434, 475, 500, 532, 589, 620, 625, 665, 700, 760, 775, 868, 875, 950, 1000, 1064, 1085, 1178, 1240, 1250, 1330, 1400, 1550, 1736, 1750, 1900, 2170, 2356, 2375, 2500, 2660, 2945, 3100, 3325, 3500, 3800, 3875, 4123, 4340, 4375, 4712, 4750, 5000, 5320, 5425, 5890, 6200, 6650, 7000, 7750, 8246, 8680, 8750, 9500, 10850, 11780, 11875, 13300, 14725, 15500, 16492, 16625, 17500, 19000, 19375, 20615, 21700, 23560, 23750, 26600, 27125, 29450, 31000, 32984, 33250, 35000, 38750, 41230, 43400, 47500, 54250, 58900, 66500, 73625, 77500, 82460, 83125, 95000, 103075, 108500, 117800, 133000, 135625, 147250, 155000, 164920, 166250, 206150, 217000, 271250, 294500, 332500, 368125, 412300, 515375, 542500, 589000, 665000, 736250, 824600, 1030750, 1085000, 1472500, 2061500, 2576875, 2945000, 4123000, 5153750, 10307500, 20615000]

約数ペア:

[(1, 20615000), (2, 10307500), (4, 5153750), (5, 4123000), (7, 2945000), (8, 2576875), (10, 2061500), (14, 1472500), (19, 1085000), (20, 1030750), (25, 824600), (28, 736250), (31, 665000), (35, 589000), (38, 542500), (40, 515375), (50, 412300), (56, 368125), (62, 332500), (70, 294500), (76, 271250), (95, 217000), (100, 206150), (124, 166250), (125, 164920), (133, 155000), (140, 147250), (152, 135625), (155, 133000), (175, 117800), (190, 108500), (200, 103075), (217, 95000), (248, 83125), (250, 82460), (266, 77500), (280, 73625), (310, 66500), (350, 58900), (380, 54250), (434, 47500), (475, 43400), (500, 41230), (532, 38750), (589, 35000), (620, 33250), (625, 32984), (665, 31000), (700, 29450), (760, 27125), (775, 26600), (868, 23750), (875, 23560), (950, 21700), (1000, 20615), (1064, 19375), (1085, 19000), (1178, 17500), (1240, 16625), (1250, 16492), (1330, 15500), (1400, 14725), (1550, 13300), (1736, 11875), (1750, 11780), (1900, 10850), (2170, 9500), (2356, 8750), (2375, 8680), (2500, 8246), (2660, 7750), (2945, 7000), (3100, 6650), (3325, 6200), (3500, 5890), (3800, 5425), (3875, 5320), (4123, 5000), (4340, 4750), (4375, 4712)]