21109764

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{135319}}^1$

素因数の和:135339

約数の個数: 24

約数和(自身を含む): 53045440

約数和(自身を除く): 31935676

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 135319, 270638, 405957, 541276, 811914, 1623828, 1759147, 3518294, 5277441, 7036588, 10554882, 21109764]

約数ペア:

[(1, 21109764), (2, 10554882), (3, 7036588), (4, 5277441), (6, 3518294), (12, 1759147), (13, 1623828), (26, 811914), (39, 541276), (52, 405957), (78, 270638), (156, 135319)]