21656478

素因数分解:

$2^1\times 3^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{1129}}^1$

素因数の和:1296

約数の個数: 32

約数和(自身を含む): 45561600

約数和(自身を除く): 23905122

約数列:

[1, 2, 3, 6, 23, 46, 69, 138, 139, 278, 417, 834, 1129, 2258, 3197, 3387, 6394, 6774, 9591, 19182, 25967, 51934, 77901, 155802, 156931, 313862, 470793, 941586, 3609413, 7218826, 10828239, 21656478]

約数ペア:

[(1, 21656478), (2, 10828239), (3, 7218826), (6, 3609413), (23, 941586), (46, 470793), (69, 313862), (138, 156931), (139, 155802), (278, 77901), (417, 51934), (834, 25967), (1129, 19182), (2258, 9591), (3197, 6774), (3387, 6394)]