21494241

素因数分解:

$3^4\times {\mathrm{79}}^1\times {\mathrm{3359}}^1$

素因数の和:3450

約数の個数: 20

約数和(自身を含む): 32524800

約数和(自身を除く): 11030559

約数列:

[1, 3, 9, 27, 79, 81, 237, 711, 2133, 3359, 6399, 10077, 30231, 90693, 265361, 272079, 796083, 2388249, 7164747, 21494241]

約数ペア:

[(1, 21494241), (3, 7164747), (9, 2388249), (27, 796083), (79, 272079), (81, 265361), (237, 90693), (711, 30231), (2133, 10077), (3359, 6399)]