31219419

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{449}}^1$

素因数の和:520

約数の個数: 48

約数和(自身を含む): 54172800

約数和(自身を除く): 22953381

約数列:

[1, 3, 7, 11, 21, 33, 43, 49, 77, 129, 147, 231, 301, 449, 473, 539, 903, 1347, 1419, 1617, 2107, 3143, 3311, 4939, 6321, 9429, 9933, 14817, 19307, 22001, 23177, 34573, 57921, 66003, 69531, 103719, 135149, 212377, 242011, 405447, 637131, 726033, 946043, 1486639, 2838129, 4459917, 10406473, 31219419]

約数ペア:

[(1, 31219419), (3, 10406473), (7, 4459917), (11, 2838129), (21, 1486639), (33, 946043), (43, 726033), (49, 637131), (77, 405447), (129, 242011), (147, 212377), (231, 135149), (301, 103719), (449, 69531), (473, 66003), (539, 57921), (903, 34573), (1347, 23177), (1419, 22001), (1617, 19307), (2107, 14817), (3143, 9933), (3311, 9429), (4939, 6321)]