21536853

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{107}}^1\times {\mathrm{397}}^1$

素因数の和:533

約数の個数: 24

約数和(自身を含む): 31464288

約数和(自身を除く): 9927435

約数列:

[1, 3, 13, 39, 107, 169, 321, 397, 507, 1191, 1391, 4173, 5161, 15483, 18083, 42479, 54249, 67093, 127437, 201279, 552227, 1656681, 7178951, 21536853]

約数ペア:

[(1, 21536853), (3, 7178951), (13, 1656681), (39, 552227), (107, 201279), (169, 127437), (321, 67093), (397, 54249), (507, 42479), (1191, 18083), (1391, 15483), (4173, 5161)]