128157038

素因数分解:

$2^1\times {\mathrm{31}}^2\times {\mathrm{131}}^1\times {\mathrm{509}}^1$

素因数の和:704

約数の個数: 24

約数和(自身を含む): 200546280

約数和(自身を除く): 72389242

約数列:

[1, 2, 31, 62, 131, 262, 509, 961, 1018, 1922, 4061, 8122, 15779, 31558, 66679, 125891, 133358, 251782, 489149, 978298, 2067049, 4134098, 64078519, 128157038]

約数ペア:

[(1, 128157038), (2, 64078519), (31, 4134098), (62, 2067049), (131, 978298), (262, 489149), (509, 251782), (961, 133358), (1018, 125891), (1922, 66679), (4061, 31558), (8122, 15779)]