256661554

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{137}}^1\times {\mathrm{139}}^1\times {\mathrm{293}}^1$

素因数の和:594

約数の個数: 32

約数和(自身を含む): 408965760

約数和(自身を除く): 152304206

約数列:

[1, 2, 23, 46, 137, 139, 274, 278, 293, 586, 3151, 3197, 6302, 6394, 6739, 13478, 19043, 38086, 40141, 40727, 80282, 81454, 437989, 875978, 923243, 936721, 1846486, 1873442, 5579599, 11159198, 128330777, 256661554]

約数ペア:

[(1, 256661554), (2, 128330777), (23, 11159198), (46, 5579599), (137, 1873442), (139, 1846486), (274, 936721), (278, 923243), (293, 875978), (586, 437989), (3151, 81454), (3197, 80282), (6302, 40727), (6394, 40141), (6739, 38086), (13478, 19043)]