20238939

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{241}}^1$

素因数の和:328

約数の個数: 48

約数和(自身を含む): 35436544

約数和(自身を除く): 15197605

約数列:

[1, 3, 7, 9, 21, 31, 43, 63, 93, 129, 217, 241, 279, 301, 387, 651, 723, 903, 1333, 1687, 1953, 2169, 2709, 3999, 5061, 7471, 9331, 10363, 11997, 15183, 22413, 27993, 31089, 52297, 67239, 72541, 83979, 93267, 156891, 217623, 321253, 470673, 652869, 963759, 2248771, 2891277, 6746313, 20238939]

約数ペア:

[(1, 20238939), (3, 6746313), (7, 2891277), (9, 2248771), (21, 963759), (31, 652869), (43, 470673), (63, 321253), (93, 217623), (129, 156891), (217, 93267), (241, 83979), (279, 72541), (301, 67239), (387, 52297), (651, 31089), (723, 27993), (903, 22413), (1333, 15183), (1687, 11997), (1953, 10363), (2169, 9331), (2709, 7471), (3999, 5061)]