18993933

素因数分解:

$3^4\times 7^1\times {\mathrm{139}}^1\times {\mathrm{241}}^1$

素因数の和:399

約数の個数: 40

約数和(自身を含む): 32795840

約数和(自身を除く): 13801907

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 139, 189, 241, 417, 567, 723, 973, 1251, 1687, 2169, 2919, 3753, 5061, 6507, 8757, 11259, 15183, 19521, 26271, 33499, 45549, 78813, 100497, 136647, 234493, 301491, 703479, 904473, 2110437, 2713419, 6331311, 18993933]

約数ペア:

[(1, 18993933), (3, 6331311), (7, 2713419), (9, 2110437), (21, 904473), (27, 703479), (63, 301491), (81, 234493), (139, 136647), (189, 100497), (241, 78813), (417, 45549), (567, 33499), (723, 26271), (973, 19521), (1251, 15183), (1687, 11259), (2169, 8757), (2919, 6507), (3753, 5061)]