21031620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{4937}}^1$

素因数の和:5020

約数の個数: 48

約数和(自身を含む): 59730048

約数和(自身を除く): 38698428

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 71, 142, 213, 284, 355, 426, 710, 852, 1065, 1420, 2130, 4260, 4937, 9874, 14811, 19748, 24685, 29622, 49370, 59244, 74055, 98740, 148110, 296220, 350527, 701054, 1051581, 1402108, 1752635, 2103162, 3505270, 4206324, 5257905, 7010540, 10515810, 21031620]

約数ペア:

[(1, 21031620), (2, 10515810), (3, 7010540), (4, 5257905), (5, 4206324), (6, 3505270), (10, 2103162), (12, 1752635), (15, 1402108), (20, 1051581), (30, 701054), (60, 350527), (71, 296220), (142, 148110), (213, 98740), (284, 74055), (355, 59244), (426, 49370), (710, 29622), (852, 24685), (1065, 19748), (1420, 14811), (2130, 9874), (4260, 4937)]