21432255

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{839}}^1$

素因数の和:991

約数の個数: 32

約数和(自身を含む): 37255680

約数和(自身を除く): 15823425

約数列:

[1, 3, 5, 13, 15, 39, 65, 131, 195, 393, 655, 839, 1703, 1965, 2517, 4195, 5109, 8515, 10907, 12585, 25545, 32721, 54535, 109909, 163605, 329727, 549545, 1428817, 1648635, 4286451, 7144085, 21432255]

約数ペア:

[(1, 21432255), (3, 7144085), (5, 4286451), (13, 1648635), (15, 1428817), (39, 549545), (65, 329727), (131, 163605), (195, 109909), (393, 54535), (655, 32721), (839, 25545), (1703, 12585), (1965, 10907), (2517, 8515), (4195, 5109)]