21409885

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{35983}}^1$

素因数の和:36012

約数の個数: 16

約数和(自身を含む): 31090176

約数和(自身を除く): 9680291

約数列:

[1, 5, 7, 17, 35, 85, 119, 595, 35983, 179915, 251881, 611711, 1259405, 3058555, 4281977, 21409885]

約数ペア:

[(1, 21409885), (5, 4281977), (7, 3058555), (17, 1259405), (35, 611711), (85, 251881), (119, 179915), (595, 35983)]