19891496

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{67}}^1$

素因数の和:186

約数の個数: 64

約数和(自身を含む): 41860800

約数和(自身を除く): 21969304

約数列:

[1, 2, 4, 8, 17, 34, 37, 59, 67, 68, 74, 118, 134, 136, 148, 236, 268, 296, 472, 536, 629, 1003, 1139, 1258, 2006, 2183, 2278, 2479, 2516, 3953, 4012, 4366, 4556, 4958, 5032, 7906, 8024, 8732, 9112, 9916, 15812, 17464, 19832, 31624, 37111, 42143, 67201, 74222, 84286, 134402, 146261, 148444, 168572, 268804, 292522, 296888, 337144, 537608, 585044, 1170088, 2486437, 4972874, 9945748, 19891496]

約数ペア:

[(1, 19891496), (2, 9945748), (4, 4972874), (8, 2486437), (17, 1170088), (34, 585044), (37, 537608), (59, 337144), (67, 296888), (68, 292522), (74, 268804), (118, 168572), (134, 148444), (136, 146261), (148, 134402), (236, 84286), (268, 74222), (296, 67201), (472, 42143), (536, 37111), (629, 31624), (1003, 19832), (1139, 17464), (1258, 15812), (2006, 9916), (2183, 9112), (2278, 8732), (2479, 8024), (2516, 7906), (3953, 5032), (4012, 4958), (4366, 4556)]