20912155

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{523}}^1\times {\mathrm{727}}^1$

素因数の和:1266

約数の個数: 16

約数和(自身を含む): 27465984

約数和(自身を除く): 6553829

約数列:

[1, 5, 11, 55, 523, 727, 2615, 3635, 5753, 7997, 28765, 39985, 380221, 1901105, 4182431, 20912155]

約数ペア:

[(1, 20912155), (5, 4182431), (11, 1901105), (55, 380221), (523, 39985), (727, 28765), (2615, 7997), (3635, 5753)]