21441864

素因数分解:

$2^3\times 3^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{263}}^1$

素因数の和:394

約数の個数: 64

約数和(自身を含む): 55756800

約数和(自身を除く): 34314936

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 43, 79, 86, 129, 158, 172, 237, 258, 263, 316, 344, 474, 516, 526, 632, 789, 948, 1032, 1052, 1578, 1896, 2104, 3156, 3397, 6312, 6794, 10191, 11309, 13588, 20382, 20777, 22618, 27176, 33927, 40764, 41554, 45236, 62331, 67854, 81528, 83108, 90472, 124662, 135708, 166216, 249324, 271416, 498648, 893411, 1786822, 2680233, 3573644, 5360466, 7147288, 10720932, 21441864]

約数ペア:

[(1, 21441864), (2, 10720932), (3, 7147288), (4, 5360466), (6, 3573644), (8, 2680233), (12, 1786822), (24, 893411), (43, 498648), (79, 271416), (86, 249324), (129, 166216), (158, 135708), (172, 124662), (237, 90472), (258, 83108), (263, 81528), (316, 67854), (344, 62331), (474, 45236), (516, 41554), (526, 40764), (632, 33927), (789, 27176), (948, 22618), (1032, 20777), (1052, 20382), (1578, 13588), (1896, 11309), (2104, 10191), (3156, 6794), (3397, 6312)]