21107295

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{42641}}^1$

素因数の和:42663

約数の個数: 24

約数和(自身を含む): 39912912

約数和(自身を除く): 18805617

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 165, 495, 42641, 127923, 213205, 383769, 469051, 639615, 1407153, 1918845, 2345255, 4221459, 7035765, 21107295]

約数ペア:

[(1, 21107295), (3, 7035765), (5, 4221459), (9, 2345255), (11, 1918845), (15, 1407153), (33, 639615), (45, 469051), (55, 383769), (99, 213205), (165, 127923), (495, 42641)]