20520995

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{107}}^1\times {\mathrm{317}}^1$

素因数の和:451

約数の個数: 24

約数和(自身を含む): 27406512

約数和(自身を除く): 6885517

約数列:

[1, 5, 11, 55, 107, 121, 317, 535, 605, 1177, 1585, 3487, 5885, 12947, 17435, 33919, 38357, 64735, 169595, 191785, 373109, 1865545, 4104199, 20520995]

約数ペア:

[(1, 20520995), (5, 4104199), (11, 1865545), (55, 373109), (107, 191785), (121, 169595), (317, 64735), (535, 38357), (605, 33919), (1177, 17435), (1585, 12947), (3487, 5885)]