212463027

素因数分解:

$3^3\times 7^1\times {\mathrm{71}}^2\times {\mathrm{223}}^1$

素因数の和:381

約数の個数: 48

約数和(自身を含む): 366499840

約数和(自身を除く): 154036813

約数列:

[1, 3, 7, 9, 21, 27, 63, 71, 189, 213, 223, 497, 639, 669, 1491, 1561, 1917, 2007, 4473, 4683, 5041, 6021, 13419, 14049, 15123, 15833, 35287, 42147, 45369, 47499, 105861, 110831, 136107, 142497, 317583, 332493, 427491, 952749, 997479, 1124143, 2992437, 3372429, 7869001, 10117287, 23607003, 30351861, 70821009, 212463027]

約数ペア:

[(1, 212463027), (3, 70821009), (7, 30351861), (9, 23607003), (21, 10117287), (27, 7869001), (63, 3372429), (71, 2992437), (189, 1124143), (213, 997479), (223, 952749), (497, 427491), (639, 332493), (669, 317583), (1491, 142497), (1561, 136107), (1917, 110831), (2007, 105861), (4473, 47499), (4683, 45369), (5041, 42147), (6021, 35287), (13419, 15833), (14049, 15123)]