21066495

素因数分解:

$3^1\times 5^1\times {\mathrm{331}}^1\times {\mathrm{4243}}^1$

素因数の和:4582

約数の個数: 16

約数和(自身を含む): 33816192

約数和(自身を除く): 12749697

約数列:

[1, 3, 5, 15, 331, 993, 1655, 4243, 4965, 12729, 21215, 63645, 1404433, 4213299, 7022165, 21066495]

約数ペア:

[(1, 21066495), (3, 7022165), (5, 4213299), (15, 1404433), (331, 63645), (993, 21215), (1655, 12729), (4243, 4965)]