19758711

素因数分解:

$3^1\times 7^2\times {\mathrm{139}}^1\times {\mathrm{967}}^1$

素因数の和:1123

約数の個数: 24

約数和(自身を含む): 30898560

約数和(自身を除く): 11139849

約数列:

[1, 3, 7, 21, 49, 139, 147, 417, 967, 973, 2901, 2919, 6769, 6811, 20307, 20433, 47383, 134413, 142149, 403239, 940891, 2822673, 6586237, 19758711]

約数ペア:

[(1, 19758711), (3, 6586237), (7, 2822673), (21, 940891), (49, 403239), (139, 142149), (147, 134413), (417, 47383), (967, 20433), (973, 20307), (2901, 6811), (2919, 6769)]