638260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1$

素因数の和:160

約数の個数: 48

約数和(自身を含む): 1580544

約数和(自身を除く): 942284

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 47, 70, 94, 97, 140, 188, 194, 235, 329, 388, 470, 485, 658, 679, 940, 970, 1316, 1358, 1645, 1940, 2716, 3290, 3395, 4559, 6580, 6790, 9118, 13580, 18236, 22795, 31913, 45590, 63826, 91180, 127652, 159565, 319130, 638260]

約数ペア:

[(1, 638260), (2, 319130), (4, 159565), (5, 127652), (7, 91180), (10, 63826), (14, 45590), (20, 31913), (28, 22795), (35, 18236), (47, 13580), (70, 9118), (94, 6790), (97, 6580), (140, 4559), (188, 3395), (194, 3290), (235, 2716), (329, 1940), (388, 1645), (470, 1358), (485, 1316), (658, 970), (679, 940)]