21323813

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{191}}^1\times {\mathrm{389}}^1$

素因数の和:628

約数の個数: 16

約数和(自身を含む): 25159680

約数和(自身を除く): 3835867

約数列:

[1, 7, 41, 191, 287, 389, 1337, 2723, 7831, 15949, 54817, 74299, 111643, 520093, 3046259, 21323813]

約数ペア:

[(1, 21323813), (7, 3046259), (41, 520093), (191, 111643), (287, 74299), (389, 54817), (1337, 15949), (2723, 7831)]