21346647

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{103}}^1\times {\mathrm{139}}^1$

素因数の和:323

約数の個数: 32

約数和(自身を含む): 33546240

約数和(自身を除く): 12199593

約数列:

[1, 3, 7, 21, 71, 103, 139, 213, 309, 417, 497, 721, 973, 1491, 2163, 2919, 7313, 9869, 14317, 21939, 29607, 42951, 51191, 69083, 100219, 153573, 207249, 300657, 1016507, 3049521, 7115549, 21346647]

約数ペア:

[(1, 21346647), (3, 7115549), (7, 3049521), (21, 1016507), (71, 300657), (103, 207249), (139, 153573), (213, 100219), (309, 69083), (417, 51191), (497, 42951), (721, 29607), (973, 21939), (1491, 14317), (2163, 9869), (2919, 7313)]