247779

素因数分解:

$3^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1$

素因数の和:61

約数の個数: 40

約数和(自身を含む): 464640

約数和(自身を除く): 216861

約数列:

[1, 3, 7, 9, 19, 21, 23, 27, 57, 63, 69, 81, 133, 161, 171, 189, 207, 399, 437, 483, 513, 567, 621, 1197, 1311, 1449, 1539, 1863, 3059, 3591, 3933, 4347, 9177, 10773, 11799, 13041, 27531, 35397, 82593, 247779]

約数ペア:

[(1, 247779), (3, 82593), (7, 35397), (9, 27531), (19, 13041), (21, 11799), (23, 10773), (27, 9177), (57, 4347), (63, 3933), (69, 3591), (81, 3059), (133, 1863), (161, 1539), (171, 1449), (189, 1311), (207, 1197), (399, 621), (437, 567), (483, 513)]