20585320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{1987}}^1$

素因数の和:2042

約数の個数: 64

約数和(自身を含む): 54391680

約数和(自身を除く): 33806360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 37, 40, 56, 70, 74, 140, 148, 185, 259, 280, 296, 370, 518, 740, 1036, 1295, 1480, 1987, 2072, 2590, 3974, 5180, 7948, 9935, 10360, 13909, 15896, 19870, 27818, 39740, 55636, 69545, 73519, 79480, 111272, 139090, 147038, 278180, 294076, 367595, 514633, 556360, 588152, 735190, 1029266, 1470380, 2058532, 2573165, 2940760, 4117064, 5146330, 10292660, 20585320]

約数ペア:

[(1, 20585320), (2, 10292660), (4, 5146330), (5, 4117064), (7, 2940760), (8, 2573165), (10, 2058532), (14, 1470380), (20, 1029266), (28, 735190), (35, 588152), (37, 556360), (40, 514633), (56, 367595), (70, 294076), (74, 278180), (140, 147038), (148, 139090), (185, 111272), (259, 79480), (280, 73519), (296, 69545), (370, 55636), (518, 39740), (740, 27818), (1036, 19870), (1295, 15896), (1480, 13909), (1987, 10360), (2072, 9935), (2590, 7948), (3974, 5180)]