21890865

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{39443}}^1$

素因数の和:39488

約数の個数: 16

約数和(自身を含む): 35972928

約数和(自身を除く): 14082063

約数列:

[1, 3, 5, 15, 37, 111, 185, 555, 39443, 118329, 197215, 591645, 1459391, 4378173, 7296955, 21890865]

約数ペア:

[(1, 21890865), (3, 7296955), (5, 4378173), (15, 1459391), (37, 591645), (111, 197215), (185, 118329), (555, 39443)]