21802893

素因数分解:

$3^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{2089}}^1$

素因数の和:2177

約数の個数: 24

約数和(自身を含む): 34309440

約数和(自身を除く): 12506547

約数列:

[1, 3, 7, 21, 49, 71, 147, 213, 497, 1491, 2089, 3479, 6267, 10437, 14623, 43869, 102361, 148319, 307083, 444957, 1038233, 3114699, 7267631, 21802893]

約数ペア:

[(1, 21802893), (3, 7267631), (7, 3114699), (21, 1038233), (49, 444957), (71, 307083), (147, 148319), (213, 102361), (497, 43869), (1491, 14623), (2089, 10437), (3479, 6267)]