20905095

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{32411}}^1$

素因数の和:32462

約数の個数: 16

約数和(自身を含む): 34227072

約数和(自身を除く): 13321977

約数列:

[1, 3, 5, 15, 43, 129, 215, 645, 32411, 97233, 162055, 486165, 1393673, 4181019, 6968365, 20905095]

約数ペア:

[(1, 20905095), (3, 6968365), (5, 4181019), (15, 1393673), (43, 486165), (129, 162055), (215, 97233), (645, 32411)]