21620763

素因数分解:

$3^4\times {\mathrm{293}}^1\times {\mathrm{911}}^1$

素因数の和:1216

約数の個数: 20

約数和(自身を含む): 32443488

約数和(自身を除く): 10822725

約数列:

[1, 3, 9, 27, 81, 293, 879, 911, 2637, 2733, 7911, 8199, 23733, 24597, 73791, 266923, 800769, 2402307, 7206921, 21620763]

約数ペア:

[(1, 21620763), (3, 7206921), (9, 2402307), (27, 800769), (81, 266923), (293, 73791), (879, 24597), (911, 23733), (2637, 8199), (2733, 7911)]