20986401

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{463}}^1\times {\mathrm{521}}^1$

素因数の和:1016

約数の個数: 16

約数和(自身を含む): 29064960

約数和(自身を除く): 8078559

約数列:

[1, 3, 29, 87, 463, 521, 1389, 1563, 13427, 15109, 40281, 45327, 241223, 723669, 6995467, 20986401]

約数ペア:

[(1, 20986401), (3, 6995467), (29, 723669), (87, 241223), (463, 45327), (521, 40281), (1389, 15109), (1563, 13427)]