20478561

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{443}}^1\times {\mathrm{811}}^1$

素因数の和:1276

約数の個数: 16

約数和(自身を含む): 28842240

約数和(自身を除く): 8363679

約数列:

[1, 3, 19, 57, 443, 811, 1329, 2433, 8417, 15409, 25251, 46227, 359273, 1077819, 6826187, 20478561]

約数ペア:

[(1, 20478561), (3, 6826187), (19, 1077819), (57, 359273), (443, 46227), (811, 25251), (1329, 15409), (2433, 8417)]