21512457

素因数分解:

$3^2\times {\mathrm{89}}^1\times {\mathrm{107}}^1\times {\mathrm{251}}^1$

素因数の和:453

約数の個数: 24

約数和(自身を含む): 31842720

約数和(自身を除く): 10330263

約数列:

[1, 3, 9, 89, 107, 251, 267, 321, 753, 801, 963, 2259, 9523, 22339, 26857, 28569, 67017, 80571, 85707, 201051, 241713, 2390273, 7170819, 21512457]

約数ペア:

[(1, 21512457), (3, 7170819), (9, 2390273), (89, 241713), (107, 201051), (251, 85707), (267, 80571), (321, 67017), (753, 28569), (801, 26857), (963, 22339), (2259, 9523)]