20881107

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{317}}^1\times {\mathrm{563}}^1$

素因数の和:899

約数の個数: 24

約数和(自身を含む): 32642064

約数和(自身を除く): 11760957

約数列:

[1, 3, 9, 13, 39, 117, 317, 563, 951, 1689, 2853, 4121, 5067, 7319, 12363, 21957, 37089, 65871, 178471, 535413, 1606239, 2320123, 6960369, 20881107]

約数ペア:

[(1, 20881107), (3, 6960369), (9, 2320123), (13, 1606239), (39, 535413), (117, 178471), (317, 65871), (563, 37089), (951, 21957), (1689, 12363), (2853, 7319), (4121, 5067)]