21489853

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{16417}}^1$

素因数の和:16452

約数の個数: 16

約数和(自身を含む): 28370304

約数和(自身を除く): 6880451

約数列:

[1, 7, 11, 17, 77, 119, 187, 1309, 16417, 114919, 180587, 279089, 1264109, 1953623, 3069979, 21489853]

約数ペア:

[(1, 21489853), (7, 3069979), (11, 1953623), (17, 1264109), (77, 279089), (119, 180587), (187, 114919), (1309, 16417)]