256956095

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1$

素因数の和:264

約数の個数: 64

約数和(自身を含む): 374976000

約数和(自身を除く): 118019905

約数列:

[1, 5, 11, 19, 29, 55, 61, 95, 139, 145, 209, 305, 319, 551, 671, 695, 1045, 1159, 1529, 1595, 1769, 2641, 2755, 3355, 4031, 5795, 6061, 7645, 8479, 8845, 12749, 13205, 19459, 20155, 29051, 30305, 33611, 42395, 44341, 63745, 76589, 93269, 97295, 145255, 161101, 168055, 221705, 245891, 369721, 382945, 466345, 805505, 842479, 1229455, 1772111, 1848605, 2704801, 4212395, 4671929, 8860555, 13524005, 23359645, 51391219, 256956095]

約数ペア:

[(1, 256956095), (5, 51391219), (11, 23359645), (19, 13524005), (29, 8860555), (55, 4671929), (61, 4212395), (95, 2704801), (139, 1848605), (145, 1772111), (209, 1229455), (305, 842479), (319, 805505), (551, 466345), (671, 382945), (695, 369721), (1045, 245891), (1159, 221705), (1529, 168055), (1595, 161101), (1769, 145255), (2641, 97295), (2755, 93269), (3355, 76589), (4031, 63745), (5795, 44341), (6061, 42395), (7645, 33611), (8479, 30305), (8845, 29051), (12749, 20155), (13205, 19459)]