257742009

素因数分解:

$3^2\times 7^2\times {\mathrm{181}}^1\times {\mathrm{3229}}^1$

素因数の和:3430

約数の個数: 36

約数和(自身を含む): 435604260

約数和(自身を除く): 177862251

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 181, 441, 543, 1267, 1629, 3229, 3801, 8869, 9687, 11403, 22603, 26607, 29061, 67809, 79821, 158221, 203427, 474663, 584449, 1423989, 1753347, 4091143, 5260041, 12273429, 28638001, 36820287, 85914003, 257742009]

約数ペア:

[(1, 257742009), (3, 85914003), (7, 36820287), (9, 28638001), (21, 12273429), (49, 5260041), (63, 4091143), (147, 1753347), (181, 1423989), (441, 584449), (543, 474663), (1267, 203427), (1629, 158221), (3229, 79821), (3801, 67809), (8869, 29061), (9687, 26607), (11403, 22603)]