21000971719

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{12146311}}^1$

素因数の和:12146350

約数の個数: 16

約数和(自身を含む): 27207738880

約数和(自身を除く): 6206767161

約数列:

[1, 7, 13, 19, 91, 133, 247, 1729, 12146311, 85024177, 157902043, 230779909, 1105314301, 1615459363, 3000138817, 21000971719]

約数ペア:

[(1, 21000971719), (7, 3000138817), (13, 1615459363), (19, 1105314301), (91, 230779909), (133, 157902043), (247, 85024177), (1729, 12146311)]