20571098

素因数分解:

$2^1\times {\mathrm{137}}^1\times {\mathrm{193}}^1\times {\mathrm{389}}^1$

素因数の和:721

約数の個数: 16

約数和(自身を含む): 31323240

約数和(自身を除く): 10752142

約数列:

[1, 2, 137, 193, 274, 386, 389, 778, 26441, 52882, 53293, 75077, 106586, 150154, 10285549, 20571098]

約数ペア:

[(1, 20571098), (2, 10285549), (137, 150154), (193, 106586), (274, 75077), (386, 53293), (389, 52882), (778, 26441)]