20913831

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{1423}}^1$

素因数の和:1523

約数の個数: 24

約数和(自身を含む): 31988736

約数和(自身を除く): 11074905

約数列:

[1, 3, 9, 23, 69, 71, 207, 213, 639, 1423, 1633, 4269, 4899, 12807, 14697, 32729, 98187, 101033, 294561, 303099, 909297, 2323759, 6971277, 20913831]

約数ペア:

[(1, 20913831), (3, 6971277), (9, 2323759), (23, 909297), (69, 303099), (71, 294561), (207, 101033), (213, 98187), (639, 32729), (1423, 14697), (1633, 12807), (4269, 4899)]