18989019

素因数分解:

$3^3\times 7^2\times {\mathrm{31}}^1\times {\mathrm{463}}^1$

素因数の和:517

約数の個数: 48

約数和(自身を含む): 33853440

約数和(自身を除く): 14864421

約数列:

[1, 3, 7, 9, 21, 27, 31, 49, 63, 93, 147, 189, 217, 279, 441, 463, 651, 837, 1323, 1389, 1519, 1953, 3241, 4167, 4557, 5859, 9723, 12501, 13671, 14353, 22687, 29169, 41013, 43059, 68061, 87507, 100471, 129177, 204183, 301413, 387531, 612549, 703297, 904239, 2109891, 2712717, 6329673, 18989019]

約数ペア:

[(1, 18989019), (3, 6329673), (7, 2712717), (9, 2109891), (21, 904239), (27, 703297), (31, 612549), (49, 387531), (63, 301413), (93, 204183), (147, 129177), (189, 100471), (217, 87507), (279, 68061), (441, 43059), (463, 41013), (651, 29169), (837, 22687), (1323, 14353), (1389, 13671), (1519, 12501), (1953, 9723), (3241, 5859), (4167, 4557)]