18789876

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{173}}^1\times {\mathrm{431}}^1$

素因数の和:621

約数の個数: 72

約数和(自身を含む): 54722304

約数和(自身を除く): 35932428

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 173, 252, 346, 431, 519, 692, 862, 1038, 1211, 1293, 1557, 1724, 2076, 2422, 2586, 3017, 3114, 3633, 3879, 4844, 5172, 6034, 6228, 7266, 7758, 9051, 10899, 12068, 14532, 15516, 18102, 21798, 27153, 36204, 43596, 54306, 74563, 108612, 149126, 223689, 298252, 447378, 521941, 671067, 894756, 1043882, 1342134, 1565823, 2087764, 2684268, 3131646, 4697469, 6263292, 9394938, 18789876]

約数ペア:

[(1, 18789876), (2, 9394938), (3, 6263292), (4, 4697469), (6, 3131646), (7, 2684268), (9, 2087764), (12, 1565823), (14, 1342134), (18, 1043882), (21, 894756), (28, 671067), (36, 521941), (42, 447378), (63, 298252), (84, 223689), (126, 149126), (173, 108612), (252, 74563), (346, 54306), (431, 43596), (519, 36204), (692, 27153), (862, 21798), (1038, 18102), (1211, 15516), (1293, 14532), (1557, 12068), (1724, 10899), (2076, 9051), (2422, 7758), (2586, 7266), (3017, 6228), (3114, 6034), (3633, 5172), (3879, 4844)]