20980149

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{433}}^1\times {\mathrm{521}}^1$

素因数の和:988

約数の個数: 16

約数和(自身を含む): 28998144

約数和(自身を除く): 8017995

約数列:

[1, 3, 31, 93, 433, 521, 1299, 1563, 13423, 16151, 40269, 48453, 225593, 676779, 6993383, 20980149]

約数ペア:

[(1, 20980149), (3, 6993383), (31, 676779), (93, 225593), (433, 48453), (521, 40269), (1299, 16151), (1563, 13423)]