21329763

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:168

約数の個数: 64

約数和(自身を含む): 37847040

約数和(自身を除く): 16517277

約数列:

[1, 3, 7, 13, 21, 23, 39, 43, 69, 79, 91, 129, 161, 237, 273, 299, 301, 483, 553, 559, 897, 903, 989, 1027, 1659, 1677, 1817, 2093, 2967, 3081, 3397, 3913, 5451, 6279, 6923, 7189, 10191, 11739, 12719, 12857, 20769, 21567, 23621, 23779, 38157, 38571, 44161, 70863, 71337, 78131, 89999, 132483, 165347, 234393, 269997, 309127, 496041, 546917, 927381, 1015703, 1640751, 3047109, 7109921, 21329763]

約数ペア:

[(1, 21329763), (3, 7109921), (7, 3047109), (13, 1640751), (21, 1015703), (23, 927381), (39, 546917), (43, 496041), (69, 309127), (79, 269997), (91, 234393), (129, 165347), (161, 132483), (237, 89999), (273, 78131), (299, 71337), (301, 70863), (483, 44161), (553, 38571), (559, 38157), (897, 23779), (903, 23621), (989, 21567), (1027, 20769), (1659, 12857), (1677, 12719), (1817, 11739), (2093, 10191), (2967, 7189), (3081, 6923), (3397, 6279), (3913, 5451)]