19810836

素因数分解:

$2^2\times 3^2\times {\mathrm{37}}^1\times {\mathrm{107}}^1\times {\mathrm{139}}^1$

素因数の和:293

約数の個数: 72

約数和(自身を含む): 52284960

約数和(自身を除く): 32474124

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 37, 74, 107, 111, 139, 148, 214, 222, 278, 321, 333, 417, 428, 444, 556, 642, 666, 834, 963, 1251, 1284, 1332, 1668, 1926, 2502, 3852, 3959, 5004, 5143, 7918, 10286, 11877, 14873, 15429, 15836, 20572, 23754, 29746, 30858, 35631, 44619, 46287, 47508, 59492, 61716, 71262, 89238, 92574, 133857, 142524, 178476, 185148, 267714, 535428, 550301, 1100602, 1650903, 2201204, 3301806, 4952709, 6603612, 9905418, 19810836]

約数ペア:

[(1, 19810836), (2, 9905418), (3, 6603612), (4, 4952709), (6, 3301806), (9, 2201204), (12, 1650903), (18, 1100602), (36, 550301), (37, 535428), (74, 267714), (107, 185148), (111, 178476), (139, 142524), (148, 133857), (214, 92574), (222, 89238), (278, 71262), (321, 61716), (333, 59492), (417, 47508), (428, 46287), (444, 44619), (556, 35631), (642, 30858), (666, 29746), (834, 23754), (963, 20572), (1251, 15836), (1284, 15429), (1332, 14873), (1668, 11877), (1926, 10286), (2502, 7918), (3852, 5143), (3959, 5004)]