21380460

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{8287}}^1$

素因数の和:8342

約数の個数: 48

約数和(自身を含む): 61264896

約数和(自身を除く): 39884436

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 43, 60, 86, 129, 172, 215, 258, 430, 516, 645, 860, 1290, 2580, 8287, 16574, 24861, 33148, 41435, 49722, 82870, 99444, 124305, 165740, 248610, 356341, 497220, 712682, 1069023, 1425364, 1781705, 2138046, 3563410, 4276092, 5345115, 7126820, 10690230, 21380460]

約数ペア:

[(1, 21380460), (2, 10690230), (3, 7126820), (4, 5345115), (5, 4276092), (6, 3563410), (10, 2138046), (12, 1781705), (15, 1425364), (20, 1069023), (30, 712682), (43, 497220), (60, 356341), (86, 248610), (129, 165740), (172, 124305), (215, 99444), (258, 82870), (430, 49722), (516, 41435), (645, 33148), (860, 24861), (1290, 16574), (2580, 8287)]