20686911

素因数分解:

$3^1\times 7^1\times {\mathrm{613}}^1\times {\mathrm{1607}}^1$

素因数の和:2230

約数の個数: 16

約数和(自身を含む): 31593984

約数和(自身を除く): 10907073

約数列:

[1, 3, 7, 21, 613, 1607, 1839, 4291, 4821, 11249, 12873, 33747, 985091, 2955273, 6895637, 20686911]

約数ペア:

[(1, 20686911), (3, 6895637), (7, 2955273), (21, 985091), (613, 33747), (1607, 12873), (1839, 11249), (4291, 4821)]