21018906

素因数分解:

$2^1\times 3^3\times {\mathrm{109}}^1\times {\mathrm{3571}}^1$

素因数の和:3691

約数の個数: 32

約数和(自身を含む): 47150400

約数和(自身を除く): 26131494

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 109, 218, 327, 654, 981, 1962, 2943, 3571, 5886, 7142, 10713, 21426, 32139, 64278, 96417, 192834, 389239, 778478, 1167717, 2335434, 3503151, 7006302, 10509453, 21018906]

約数ペア:

[(1, 21018906), (2, 10509453), (3, 7006302), (6, 3503151), (9, 2335434), (18, 1167717), (27, 778478), (54, 389239), (109, 192834), (218, 96417), (327, 64278), (654, 32139), (981, 21426), (1962, 10713), (2943, 7142), (3571, 5886)]