221220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{1229}}^1$

素因数の和:1244

約数の個数: 36

約数和(自身を含む): 671580

約数和(自身を除く): 450360

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 1229, 2458, 3687, 4916, 6145, 7374, 11061, 12290, 14748, 18435, 22122, 24580, 36870, 44244, 55305, 73740, 110610, 221220]

約数ペア:

[(1, 221220), (2, 110610), (3, 73740), (4, 55305), (5, 44244), (6, 36870), (9, 24580), (10, 22122), (12, 18435), (15, 14748), (18, 12290), (20, 11061), (30, 7374), (36, 6145), (45, 4916), (60, 3687), (90, 2458), (180, 1229)]