21974491

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{691}}^1$

素因数の和:775

約数の個数: 24

約数和(自身を含む): 28399680

約数和(自身を除く): 6425189

約数列:

[1, 7, 11, 49, 59, 77, 413, 539, 649, 691, 2891, 4543, 4837, 7601, 31801, 33859, 40769, 53207, 285383, 372449, 448459, 1997681, 3139213, 21974491]

約数ペア:

[(1, 21974491), (7, 3139213), (11, 1997681), (49, 448459), (59, 372449), (77, 285383), (413, 53207), (539, 40769), (649, 33859), (691, 31801), (2891, 7601), (4543, 4837)]