18988568

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{167}}^1\times {\mathrm{233}}^1$

素因数の和:467

約数の個数: 32

約数和(自身を含む): 36560160

約数和(自身を除く): 17571592

約数列:

[1, 2, 4, 8, 61, 122, 167, 233, 244, 334, 466, 488, 668, 932, 1336, 1864, 10187, 14213, 20374, 28426, 38911, 40748, 56852, 77822, 81496, 113704, 155644, 311288, 2373571, 4747142, 9494284, 18988568]

約数ペア:

[(1, 18988568), (2, 9494284), (4, 4747142), (8, 2373571), (61, 311288), (122, 155644), (167, 113704), (233, 81496), (244, 77822), (334, 56852), (466, 40748), (488, 38911), (668, 28426), (932, 20374), (1336, 14213), (1864, 10187)]