21019295

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{461}}^1\times {\mathrm{829}}^1$

素因数の和:1306

約数の個数: 16

約数和(自身を含む): 27609120

約数和(自身を除く): 6589825

約数列:

[1, 5, 11, 55, 461, 829, 2305, 4145, 5071, 9119, 25355, 45595, 382169, 1910845, 4203859, 21019295]

約数ペア:

[(1, 21019295), (5, 4203859), (11, 1910845), (55, 382169), (461, 45595), (829, 25355), (2305, 9119), (4145, 5071)]