19881818

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{8291}}^1$

素因数の和:8413

約数の個数: 16

約数和(自身を含む): 32836320

約数和(自身を除く): 12954502

約数列:

[1, 2, 11, 22, 109, 218, 1199, 2398, 8291, 16582, 91201, 182402, 903719, 1807438, 9940909, 19881818]

約数ペア:

[(1, 19881818), (2, 9940909), (11, 1807438), (22, 903719), (109, 182402), (218, 91201), (1199, 16582), (2398, 8291)]