21231111

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{199}}^1$

素因数の和:327

約数の個数: 32

約数和(自身を含む): 32140800

約数和(自身を除く): 10909689

約数列:

[1, 3, 11, 33, 53, 61, 159, 183, 199, 583, 597, 671, 1749, 2013, 2189, 3233, 6567, 9699, 10547, 12139, 31641, 35563, 36417, 106689, 116017, 133529, 348051, 400587, 643367, 1930101, 7077037, 21231111]

約数ペア:

[(1, 21231111), (3, 7077037), (11, 1930101), (33, 643367), (53, 400587), (61, 348051), (159, 133529), (183, 116017), (199, 106689), (583, 36417), (597, 35563), (671, 31641), (1749, 12139), (2013, 10547), (2189, 9699), (3233, 6567)]