21907893

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{54907}}^1$

素因数の和:54936

約数の個数: 16

約数和(自身を含む): 35141120

約数和(自身を除く): 13233227

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 54907, 164721, 384349, 1043233, 1153047, 3129699, 7302631, 21907893]

約数ペア:

[(1, 21907893), (3, 7302631), (7, 3129699), (19, 1153047), (21, 1043233), (57, 384349), (133, 164721), (399, 54907)]