20217249

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{241}}^1$

素因数の和:502

約数の個数: 32

約数和(自身を含む): 32524800

約数和(自身を除く): 12307551

約数列:

[1, 3, 9, 13, 27, 39, 117, 239, 241, 351, 717, 723, 2151, 2169, 3107, 3133, 6453, 6507, 9321, 9399, 27963, 28197, 57599, 83889, 84591, 172797, 518391, 748787, 1555173, 2246361, 6739083, 20217249]

約数ペア:

[(1, 20217249), (3, 6739083), (9, 2246361), (13, 1555173), (27, 748787), (39, 518391), (117, 172797), (239, 84591), (241, 83889), (351, 57599), (717, 28197), (723, 27963), (2151, 9399), (2169, 9321), (3107, 6507), (3133, 6453)]