21097178

素因数分解:

$2^1\times {\mathrm{37}}^1\times {\mathrm{137}}^1\times {\mathrm{2081}}^1$

素因数の和:2257

約数の個数: 16

約数和(自身を含む): 32754024

約数和(自身を除く): 11656846

約数列:

[1, 2, 37, 74, 137, 274, 2081, 4162, 5069, 10138, 76997, 153994, 285097, 570194, 10548589, 21097178]

約数ペア:

[(1, 21097178), (2, 10548589), (37, 570194), (74, 285097), (137, 153994), (274, 76997), (2081, 10138), (4162, 5069)]