21086985

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{32693}}^1$

素因数の和:32744

約数の個数: 16

約数和(自身を含む): 34524864

約数和(自身を除く): 13437879

約数列:

[1, 3, 5, 15, 43, 129, 215, 645, 32693, 98079, 163465, 490395, 1405799, 4217397, 7028995, 21086985]

約数ペア:

[(1, 21086985), (3, 7028995), (5, 4217397), (15, 1405799), (43, 490395), (129, 163465), (215, 98079), (645, 32693)]