16419921

素因数分解:

$3^1\times 7^1\times {\mathrm{601}}^1\times {\mathrm{1301}}^1$

素因数の和:1912

約数の個数: 16

約数和(自身を含む): 25081728

約数和(自身を除く): 8661807

約数列:

[1, 3, 7, 21, 601, 1301, 1803, 3903, 4207, 9107, 12621, 27321, 781901, 2345703, 5473307, 16419921]

約数ペア:

[(1, 16419921), (3, 5473307), (7, 2345703), (21, 781901), (601, 27321), (1301, 12621), (1803, 9107), (3903, 4207)]