20431365

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{4217}}^1$

素因数の和:4261

約数の個数: 32

約数和(自身を含む): 36443520

約数和(自身を除く): 16012155

約数列:

[1, 3, 5, 15, 17, 19, 51, 57, 85, 95, 255, 285, 323, 969, 1615, 4217, 4845, 12651, 21085, 63255, 71689, 80123, 215067, 240369, 358445, 400615, 1075335, 1201845, 1362091, 4086273, 6810455, 20431365]

約数ペア:

[(1, 20431365), (3, 6810455), (5, 4086273), (15, 1362091), (17, 1201845), (19, 1075335), (51, 400615), (57, 358445), (85, 240369), (95, 215067), (255, 80123), (285, 71689), (323, 63255), (969, 21085), (1615, 12651), (4217, 4845)]