20989455

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{733}}^1$

素因数の和:847

約数の個数: 32

約数和(自身を含む): 35513856

約数和(自身を除く): 14524401

約数列:

[1, 3, 5, 15, 23, 69, 83, 115, 249, 345, 415, 733, 1245, 1909, 2199, 3665, 5727, 9545, 10995, 16859, 28635, 50577, 60839, 84295, 182517, 252885, 304195, 912585, 1399297, 4197891, 6996485, 20989455]

約数ペア:

[(1, 20989455), (3, 6996485), (5, 4197891), (15, 1399297), (23, 912585), (69, 304195), (83, 252885), (115, 182517), (249, 84295), (345, 60839), (415, 50577), (733, 28635), (1245, 16859), (1909, 10995), (2199, 9545), (3665, 5727)]