21990888

素因数分解:

$2^3\times 3^2\times {\mathrm{43}}^1\times {\mathrm{7103}}^1$

素因数の和:7158

約数の個数: 48

約数和(自身を含む): 60952320

約数和(自身を除く): 38961432

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 43, 72, 86, 129, 172, 258, 344, 387, 516, 774, 1032, 1548, 3096, 7103, 14206, 21309, 28412, 42618, 56824, 63927, 85236, 127854, 170472, 255708, 305429, 511416, 610858, 916287, 1221716, 1832574, 2443432, 2748861, 3665148, 5497722, 7330296, 10995444, 21990888]

約数ペア:

[(1, 21990888), (2, 10995444), (3, 7330296), (4, 5497722), (6, 3665148), (8, 2748861), (9, 2443432), (12, 1832574), (18, 1221716), (24, 916287), (36, 610858), (43, 511416), (72, 305429), (86, 255708), (129, 170472), (172, 127854), (258, 85236), (344, 63927), (387, 56824), (516, 42618), (774, 28412), (1032, 21309), (1548, 14206), (3096, 7103)]