19728685

素因数分解:

$5^1\times {\mathrm{83}}^1\times {\mathrm{137}}^1\times {\mathrm{347}}^1$

素因数の和:572

約数の個数: 16

約数和(自身を含む): 24204096

約数和(自身を除く): 4475411

約数列:

[1, 5, 83, 137, 347, 415, 685, 1735, 11371, 28801, 47539, 56855, 144005, 237695, 3945737, 19728685]

約数ペア:

[(1, 19728685), (5, 3945737), (83, 237695), (137, 144005), (347, 56855), (415, 47539), (685, 28801), (1735, 11371)]