20863500

素因数分解:

$2^2\times 3^1\times 5^3\times 7^1\times {\mathrm{1987}}^1$

素因数の和:2016

約数の個数: 96

約数和(自身を含む): 69468672

約数和(自身を除く): 48605172

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 75, 84, 100, 105, 125, 140, 150, 175, 210, 250, 300, 350, 375, 420, 500, 525, 700, 750, 875, 1050, 1500, 1750, 1987, 2100, 2625, 3500, 3974, 5250, 5961, 7948, 9935, 10500, 11922, 13909, 19870, 23844, 27818, 29805, 39740, 41727, 49675, 55636, 59610, 69545, 83454, 99350, 119220, 139090, 149025, 166908, 198700, 208635, 248375, 278180, 298050, 347725, 417270, 496750, 596100, 695450, 745125, 834540, 993500, 1043175, 1390900, 1490250, 1738625, 2086350, 2980500, 3477250, 4172700, 5215875, 6954500, 10431750, 20863500]

約数ペア:

[(1, 20863500), (2, 10431750), (3, 6954500), (4, 5215875), (5, 4172700), (6, 3477250), (7, 2980500), (10, 2086350), (12, 1738625), (14, 1490250), (15, 1390900), (20, 1043175), (21, 993500), (25, 834540), (28, 745125), (30, 695450), (35, 596100), (42, 496750), (50, 417270), (60, 347725), (70, 298050), (75, 278180), (84, 248375), (100, 208635), (105, 198700), (125, 166908), (140, 149025), (150, 139090), (175, 119220), (210, 99350), (250, 83454), (300, 69545), (350, 59610), (375, 55636), (420, 49675), (500, 41727), (525, 39740), (700, 29805), (750, 27818), (875, 23844), (1050, 19870), (1500, 13909), (1750, 11922), (1987, 10500), (2100, 9935), (2625, 7948), (3500, 5961), (3974, 5250)]