21790155

素因数分解:

$3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{27409}}^1$

素因数の和:27470

約数の個数: 16

約数和(自身を含む): 35523360

約数和(自身を除く): 13733205

約数列:

[1, 3, 5, 15, 53, 159, 265, 795, 27409, 82227, 137045, 411135, 1452677, 4358031, 7263385, 21790155]

約数ペア:

[(1, 21790155), (3, 7263385), (5, 4358031), (15, 1452677), (53, 411135), (159, 137045), (265, 82227), (795, 27409)]