20974460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{80671}}^1$

素因数の和:80693

約数の個数: 24

約数和(自身を含む): 47435136

約数和(自身を除く): 26460676

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 80671, 161342, 322684, 403355, 806710, 1048723, 1613420, 2097446, 4194892, 5243615, 10487230, 20974460]

約数ペア:

[(1, 20974460), (2, 10487230), (4, 5243615), (5, 4194892), (10, 2097446), (13, 1613420), (20, 1048723), (26, 806710), (52, 403355), (65, 322684), (130, 161342), (260, 80671)]