18949721

素因数分解:

$7^3\times {\mathrm{101}}^1\times {\mathrm{547}}^1$

素因数の和:669

約数の個数: 16

約数和(自身を含む): 22358400

約数和(自身を除く): 3408679

約数列:

[1, 7, 49, 101, 343, 547, 707, 3829, 4949, 26803, 34643, 55247, 187621, 386729, 2707103, 18949721]

約数ペア:

[(1, 18949721), (7, 2707103), (49, 386729), (101, 187621), (343, 55247), (547, 34643), (707, 26803), (3829, 4949)]