21348910

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{421}}^1\times {\mathrm{461}}^1$

素因数の和:900

約数の個数: 32

約数和(自身を含む): 42112224

約数和(自身を除く): 20763314

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 421, 461, 842, 922, 2105, 2305, 4210, 4610, 4631, 5071, 9262, 10142, 23155, 25355, 46310, 50710, 194081, 388162, 970405, 1940810, 2134891, 4269782, 10674455, 21348910]

約数ペア:

[(1, 21348910), (2, 10674455), (5, 4269782), (10, 2134891), (11, 1940810), (22, 970405), (55, 388162), (110, 194081), (421, 50710), (461, 46310), (842, 25355), (922, 23155), (2105, 10142), (2305, 9262), (4210, 5071), (4610, 4631)]