21031659

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{1949}}^1$

素因数の和:2075

約数の個数: 24

約数和(自身を含む): 33462000

約数和(自身を除く): 12430341

約数列:

[1, 3, 9, 11, 33, 99, 109, 327, 981, 1199, 1949, 3597, 5847, 10791, 17541, 21439, 64317, 192951, 212441, 637323, 1911969, 2336851, 7010553, 21031659]

約数ペア:

[(1, 21031659), (3, 7010553), (9, 2336851), (11, 1911969), (33, 637323), (99, 212441), (109, 192951), (327, 64317), (981, 21439), (1199, 17541), (1949, 10791), (3597, 5847)]