21184665

素因数分解:

$3^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{10781}}^1$

素因数の和:10920

約数の個数: 16

約数和(自身を含む): 34157376

約数和(自身を除く): 12972711

約数列:

[1, 3, 5, 15, 131, 393, 655, 1965, 10781, 32343, 53905, 161715, 1412311, 4236933, 7061555, 21184665]

約数ペア:

[(1, 21184665), (3, 7061555), (5, 4236933), (15, 1412311), (131, 161715), (393, 53905), (655, 32343), (1965, 10781)]