21100915

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{10369}}^1$

素因数の和:10422

約数の個数: 16

約数和(自身を含む): 28372320

約数和(自身を除く): 7271405

約数列:

[1, 5, 11, 37, 55, 185, 407, 2035, 10369, 51845, 114059, 383653, 570295, 1918265, 4220183, 21100915]

約数ペア:

[(1, 21100915), (5, 4220183), (11, 1918265), (37, 570295), (55, 383653), (185, 114059), (407, 51845), (2035, 10369)]