19923561

素因数分解:

$3^2\times 7^1\times {\mathrm{521}}^1\times {\mathrm{607}}^1$

素因数の和:1141

約数の個数: 24

約数和(自身を含む): 33007104

約数和(自身を除く): 13083543

約数列:

[1, 3, 7, 9, 21, 63, 521, 607, 1563, 1821, 3647, 4249, 4689, 5463, 10941, 12747, 32823, 38241, 316247, 948741, 2213729, 2846223, 6641187, 19923561]

約数ペア:

[(1, 19923561), (3, 6641187), (7, 2846223), (9, 2213729), (21, 948741), (63, 316247), (521, 38241), (607, 32823), (1563, 12747), (1821, 10941), (3647, 5463), (4249, 4689)]