21487949

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{3407}}^1$

素因数の和:3484

約数の個数: 16

約数和(自身を含む): 26500608

約数和(自身を除く): 5012659

約数列:

[1, 7, 17, 53, 119, 371, 901, 3407, 6307, 23849, 57919, 180571, 405433, 1263997, 3069707, 21487949]

約数ペア:

[(1, 21487949), (7, 3069707), (17, 1263997), (53, 405433), (119, 180571), (371, 57919), (901, 23849), (3407, 6307)]