21745017

素因数分解:

$3^4\times 7^1\times {\mathrm{38351}}^1$

素因数の和:38370

約数の個数: 20

約数和(自身を含む): 37124736

約数和(自身を除く): 15379719

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 38351, 115053, 268457, 345159, 805371, 1035477, 2416113, 3106431, 7248339, 21745017]

約数ペア:

[(1, 21745017), (3, 7248339), (7, 3106431), (9, 2416113), (21, 1035477), (27, 805371), (63, 345159), (81, 268457), (189, 115053), (567, 38351)]