20891594

素因数分解:

$2^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1\times {\mathrm{2039}}^1$

素因数の和:2197

約数の個数: 16

約数和(自身を含む): 32313600

約数和(自身を除く): 11422006

約数列:

[1, 2, 47, 94, 109, 218, 2039, 4078, 5123, 10246, 95833, 191666, 222251, 444502, 10445797, 20891594]

約数ペア:

[(1, 20891594), (2, 10445797), (47, 444502), (94, 222251), (109, 191666), (218, 95833), (2039, 10246), (4078, 5123)]