1337647521

素因数分解:

$3^1\times 7^4\times {\mathrm{185707}}^1$

素因数の和:185738

約数の個数: 20

約数和(自身を含む): 2080672432

約数和(自身を除く): 743024911

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 2401, 7203, 185707, 557121, 1299949, 3899847, 9099643, 27298929, 63697501, 191092503, 445882507, 1337647521]

約数ペア:

[(1, 1337647521), (3, 445882507), (7, 191092503), (21, 63697501), (49, 27298929), (147, 9099643), (343, 3899847), (1029, 1299949), (2401, 557121), (7203, 185707)]