20081028

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{1021}}^1$

素因数の和:1188

約数の個数: 48

約数和(自身を含む): 51508800

約数和(自身を除く): 31427772

約数列:

[1, 2, 3, 4, 6, 11, 12, 22, 33, 44, 66, 132, 149, 298, 447, 596, 894, 1021, 1639, 1788, 2042, 3063, 3278, 4084, 4917, 6126, 6556, 9834, 11231, 12252, 19668, 22462, 33693, 44924, 67386, 134772, 152129, 304258, 456387, 608516, 912774, 1673419, 1825548, 3346838, 5020257, 6693676, 10040514, 20081028]

約数ペア:

[(1, 20081028), (2, 10040514), (3, 6693676), (4, 5020257), (6, 3346838), (11, 1825548), (12, 1673419), (22, 912774), (33, 608516), (44, 456387), (66, 304258), (132, 152129), (149, 134772), (298, 67386), (447, 44924), (596, 33693), (894, 22462), (1021, 19668), (1639, 12252), (1788, 11231), (2042, 9834), (3063, 6556), (3278, 6126), (4084, 4917)]