18971918

素因数分解:

$2^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{443}}^1$

素因数の和:501

約数の個数: 48

約数和(自身を含む): 36443520

約数和(自身を除く): 17471602

約数列:

[1, 2, 7, 14, 19, 23, 38, 46, 49, 98, 133, 161, 266, 322, 437, 443, 874, 886, 931, 1127, 1862, 2254, 3059, 3101, 6118, 6202, 8417, 10189, 16834, 20378, 21413, 21707, 42826, 43414, 58919, 71323, 117838, 142646, 193591, 387182, 412433, 499261, 824866, 998522, 1355137, 2710274, 9485959, 18971918]

約数ペア:

[(1, 18971918), (2, 9485959), (7, 2710274), (14, 1355137), (19, 998522), (23, 824866), (38, 499261), (46, 412433), (49, 387182), (98, 193591), (133, 142646), (161, 117838), (266, 71323), (322, 58919), (437, 43414), (443, 42826), (874, 21707), (886, 21413), (931, 20378), (1127, 16834), (1862, 10189), (2254, 8417), (3059, 6202), (3101, 6118)]