19968185

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{2741}}^1$

素因数の和:2824

約数の個数: 16

約数和(自身を含む): 25270272

約数和(自身を除く): 5302087

約数列:

[1, 5, 31, 47, 155, 235, 1457, 2741, 7285, 13705, 84971, 128827, 424855, 644135, 3993637, 19968185]

約数ペア:

[(1, 19968185), (5, 3993637), (31, 644135), (47, 424855), (155, 128827), (235, 84971), (1457, 13705), (2741, 7285)]