21805095

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{111821}}^1$

素因数の和:111842

約数の個数: 16

約数和(自身を含む): 37572192

約数和(自身を除く): 15767097

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 111821, 335463, 559105, 1453673, 1677315, 4361019, 7268365, 21805095]

約数ペア:

[(1, 21805095), (3, 7268365), (5, 4361019), (13, 1677315), (15, 1453673), (39, 559105), (65, 335463), (195, 111821)]