16991312

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{81689}}^1$

素因数の和:81710

約数の個数: 20

約数和(自身を含む): 35453460

約数和(自身を除く): 18462148

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 81689, 163378, 326756, 653512, 1061957, 1307024, 2123914, 4247828, 8495656, 16991312]

約数ペア:

[(1, 16991312), (2, 8495656), (4, 4247828), (8, 2123914), (13, 1307024), (16, 1061957), (26, 653512), (52, 326756), (104, 163378), (208, 81689)]