21315069

素因数分解:

$3^4\times {\mathrm{79}}^1\times {\mathrm{3331}}^1$

素因数の和:3422

約数の個数: 20

約数和(自身を含む): 32253760

約数和(自身を除く): 10938691

約数列:

[1, 3, 9, 27, 79, 81, 237, 711, 2133, 3331, 6399, 9993, 29979, 89937, 263149, 269811, 789447, 2368341, 7105023, 21315069]

約数ペア:

[(1, 21315069), (3, 7105023), (9, 2368341), (27, 789447), (79, 269811), (81, 263149), (237, 89937), (711, 29979), (2133, 9993), (3331, 6399)]