20871538

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{5039}}^1$

素因数の和:5169

約数の個数: 16

約数和(自身を含む): 33264000

約数和(自身を除く): 12392462

約数列:

[1, 2, 19, 38, 109, 218, 2071, 4142, 5039, 10078, 95741, 191482, 549251, 1098502, 10435769, 20871538]

約数ペア:

[(1, 20871538), (2, 10435769), (19, 1098502), (38, 549251), (109, 191482), (218, 95741), (2071, 10078), (4142, 5039)]