28657203778

素因数分解:

$2^1\times 7^1\times {\mathrm{761}}^1\times {\mathrm{2689807}}^1$

素因数の和:2690577

約数の個数: 16

約数和(自身を含む): 49191208704

約数和(自身を除く): 20534004926

約数列:

[1, 2, 7, 14, 761, 1522, 5327, 10654, 2689807, 5379614, 18828649, 37657298, 2046943127, 4093886254, 14328601889, 28657203778]

約数ペア:

[(1, 28657203778), (2, 14328601889), (7, 4093886254), (14, 2046943127), (761, 37657298), (1522, 18828649), (5327, 5379614), (10654, 2689807)]