28218540

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{67187}}^1$

素因数の和:67206

約数の個数: 48

約数和(自身を含む): 90300672

約数和(自身を除く): 62082132

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 67187, 134374, 201561, 268748, 335935, 403122, 470309, 671870, 806244, 940618, 1007805, 1343740, 1410927, 1881236, 2015610, 2351545, 2821854, 4031220, 4703090, 5643708, 7054635, 9406180, 14109270, 28218540]

約数ペア:

[(1, 28218540), (2, 14109270), (3, 9406180), (4, 7054635), (5, 5643708), (6, 4703090), (7, 4031220), (10, 2821854), (12, 2351545), (14, 2015610), (15, 1881236), (20, 1410927), (21, 1343740), (28, 1007805), (30, 940618), (35, 806244), (42, 671870), (60, 470309), (70, 403122), (84, 335935), (105, 268748), (140, 201561), (210, 134374), (420, 67187)]