21671220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{379}}^1\times {\mathrm{953}}^1$

素因数の和:1344

約数の個数: 48

約数和(自身を含む): 60903360

約数和(自身を除く): 39232140

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 379, 758, 953, 1137, 1516, 1895, 1906, 2274, 2859, 3790, 3812, 4548, 4765, 5685, 5718, 7580, 9530, 11370, 11436, 14295, 19060, 22740, 28590, 57180, 361187, 722374, 1083561, 1444748, 1805935, 2167122, 3611870, 4334244, 5417805, 7223740, 10835610, 21671220]

約数ペア:

[(1, 21671220), (2, 10835610), (3, 7223740), (4, 5417805), (5, 4334244), (6, 3611870), (10, 2167122), (12, 1805935), (15, 1444748), (20, 1083561), (30, 722374), (60, 361187), (379, 57180), (758, 28590), (953, 22740), (1137, 19060), (1516, 14295), (1895, 11436), (1906, 11370), (2274, 9530), (2859, 7580), (3790, 5718), (3812, 5685), (4548, 4765)]