20920005

素因数分解:

$3^3\times 5^1\times {\mathrm{241}}^1\times {\mathrm{643}}^1$

素因数の和:898

約数の個数: 32

約数和(自身を含む): 37403520

約数和(自身を除く): 16483515

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 241, 643, 723, 1205, 1929, 2169, 3215, 3615, 5787, 6507, 9645, 10845, 17361, 28935, 32535, 86805, 154963, 464889, 774815, 1394667, 2324445, 4184001, 6973335, 20920005]

約数ペア:

[(1, 20920005), (3, 6973335), (5, 4184001), (9, 2324445), (15, 1394667), (27, 774815), (45, 464889), (135, 154963), (241, 86805), (643, 32535), (723, 28935), (1205, 17361), (1929, 10845), (2169, 9645), (3215, 6507), (3615, 5787)]