21857979

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{50951}}^1$

素因数の和:50978

約数の個数: 16

約数和(自身を含む): 34239744

約数和(自身を除く): 12381765

約数列:

[1, 3, 11, 13, 33, 39, 143, 429, 50951, 152853, 560461, 662363, 1681383, 1987089, 7285993, 21857979]

約数ペア:

[(1, 21857979), (3, 7285993), (11, 1987089), (13, 1681383), (33, 662363), (39, 560461), (143, 152853), (429, 50951)]