19712505

素因数分解:

$3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{27961}}^1$

素因数の和:28016

約数の個数: 16

約数和(自身を含む): 32212224

約数和(自身を除く): 12499719

約数列:

[1, 3, 5, 15, 47, 141, 235, 705, 27961, 83883, 139805, 419415, 1314167, 3942501, 6570835, 19712505]

約数ペア:

[(1, 19712505), (3, 6570835), (5, 3942501), (15, 1314167), (47, 419415), (141, 139805), (235, 83883), (705, 27961)]