18933201

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{241}}^1$

素因数の和:326

約数の個数: 48

約数和(自身を含む): 33221760

約数和(自身を除く): 14288559

約数列:

[1, 3, 7, 9, 21, 29, 43, 63, 87, 129, 203, 241, 261, 301, 387, 609, 723, 903, 1247, 1687, 1827, 2169, 2709, 3741, 5061, 6989, 8729, 10363, 11223, 15183, 20967, 26187, 31089, 48923, 62901, 72541, 78561, 93267, 146769, 217623, 300527, 440307, 652869, 901581, 2103689, 2704743, 6311067, 18933201]

約数ペア:

[(1, 18933201), (3, 6311067), (7, 2704743), (9, 2103689), (21, 901581), (29, 652869), (43, 440307), (63, 300527), (87, 217623), (129, 146769), (203, 93267), (241, 78561), (261, 72541), (301, 62901), (387, 48923), (609, 31089), (723, 26187), (903, 20967), (1247, 15183), (1687, 11223), (1827, 10363), (2169, 8729), (2709, 6989), (3741, 5061)]