21496915

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{9533}}^1$

素因数の和:9590

約数の個数: 16

約数和(自身を含む): 28830816

約数和(自身を除く): 7333901

約数列:

[1, 5, 11, 41, 55, 205, 451, 2255, 9533, 47665, 104863, 390853, 524315, 1954265, 4299383, 21496915]

約数ペア:

[(1, 21496915), (5, 4299383), (11, 1954265), (41, 524315), (55, 390853), (205, 104863), (451, 47665), (2255, 9533)]