21085821081

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{180220693}}^1$

素因数の和:180220712

約数の個数: 12

約数和(自身を含む): 32800166308

約数和(自身を除く): 11714345227

約数列:

[1, 3, 9, 13, 39, 117, 180220693, 540662079, 1621986237, 2342869009, 7028607027, 21085821081]

約数ペア:

[(1, 21085821081), (3, 7028607027), (9, 2342869009), (13, 1621986237), (39, 540662079), (117, 180220693)]