21640694

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{523}}^1\times {\mathrm{1217}}^1$

素因数の和:1759

約数の個数: 16

約数和(自身を含む): 34464528

約数和(自身を除く): 12823834

約数列:

[1, 2, 17, 34, 523, 1046, 1217, 2434, 8891, 17782, 20689, 41378, 636491, 1272982, 10820347, 21640694]

約数ペア:

[(1, 21640694), (2, 10820347), (17, 1272982), (34, 636491), (523, 41378), (1046, 20689), (1217, 17782), (2434, 8891)]