18896680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{641}}^1$

素因数の和:730

約数の個数: 64

約数和(自身を含む): 47148480

約数和(自身を除く): 28251800

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 67, 88, 110, 134, 220, 268, 335, 440, 536, 641, 670, 737, 1282, 1340, 1474, 2564, 2680, 2948, 3205, 3685, 5128, 5896, 6410, 7051, 7370, 12820, 14102, 14740, 25640, 28204, 29480, 35255, 42947, 56408, 70510, 85894, 141020, 171788, 214735, 282040, 343576, 429470, 472417, 858940, 944834, 1717880, 1889668, 2362085, 3779336, 4724170, 9448340, 18896680]

約数ペア:

[(1, 18896680), (2, 9448340), (4, 4724170), (5, 3779336), (8, 2362085), (10, 1889668), (11, 1717880), (20, 944834), (22, 858940), (40, 472417), (44, 429470), (55, 343576), (67, 282040), (88, 214735), (110, 171788), (134, 141020), (220, 85894), (268, 70510), (335, 56408), (440, 42947), (536, 35255), (641, 29480), (670, 28204), (737, 25640), (1282, 14740), (1340, 14102), (1474, 12820), (2564, 7370), (2680, 7051), (2948, 6410), (3205, 5896), (3685, 5128)]