21135848

素因数分解:

$2^3\times {\mathrm{71}}^1\times {\mathrm{127}}^1\times {\mathrm{293}}^1$

素因数の和:497

約数の個数: 32

約数和(自身を含む): 40642560

約数和(自身を除く): 19506712

約数列:

[1, 2, 4, 8, 71, 127, 142, 254, 284, 293, 508, 568, 586, 1016, 1172, 2344, 9017, 18034, 20803, 36068, 37211, 41606, 72136, 74422, 83212, 148844, 166424, 297688, 2641981, 5283962, 10567924, 21135848]

約数ペア:

[(1, 21135848), (2, 10567924), (4, 5283962), (8, 2641981), (71, 297688), (127, 166424), (142, 148844), (254, 83212), (284, 74422), (293, 72136), (508, 41606), (568, 37211), (586, 36068), (1016, 20803), (1172, 18034), (2344, 9017)]