21699873

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{293}}^1$

素因数の和:526

約数の個数: 32

約数和(自身を含む): 34903680

約数和(自身を除く): 13203807

約数列:

[1, 3, 9, 13, 27, 39, 117, 211, 293, 351, 633, 879, 1899, 2637, 2743, 3809, 5697, 7911, 8229, 11427, 24687, 34281, 61823, 74061, 102843, 185469, 556407, 803699, 1669221, 2411097, 7233291, 21699873]

約数ペア:

[(1, 21699873), (3, 7233291), (9, 2411097), (13, 1669221), (27, 803699), (39, 556407), (117, 185469), (211, 102843), (293, 74061), (351, 61823), (633, 34281), (879, 24687), (1899, 11427), (2637, 8229), (2743, 7911), (3809, 5697)]