21456519

素因数分解:

$3^1\times 7^1\times {\mathrm{593}}^1\times {\mathrm{1723}}^1$

素因数の和:2326

約数の個数: 16

約数和(自身を含む): 32769792

約数和(自身を除く): 11313273

約数列:

[1, 3, 7, 21, 593, 1723, 1779, 4151, 5169, 12061, 12453, 36183, 1021739, 3065217, 7152173, 21456519]

約数ペア:

[(1, 21456519), (3, 7152173), (7, 3065217), (21, 1021739), (593, 36183), (1723, 12453), (1779, 12061), (4151, 5169)]