21980486

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{12647}}^1$

素因数の和:12739

約数の個数: 16

約数和(自身を含む): 36426240

約数和(自身を除く): 14445754

約数列:

[1, 2, 11, 22, 79, 158, 869, 1738, 12647, 25294, 139117, 278234, 999113, 1998226, 10990243, 21980486]

約数ペア:

[(1, 21980486), (2, 10990243), (11, 1998226), (22, 999113), (79, 278234), (158, 139117), (869, 25294), (1738, 12647)]