128307321

素因数分解:

$3^4\times {\mathrm{47}}^1\times {\mathrm{33703}}^1$

素因数の和:33762

約数の個数: 20

約数和(自身を含む): 195752832

約数和(自身を除く): 67445511

約数列:

[1, 3, 9, 27, 47, 81, 141, 423, 1269, 3807, 33703, 101109, 303327, 909981, 1584041, 2729943, 4752123, 14256369, 42769107, 128307321]

約数ペア:

[(1, 128307321), (3, 42769107), (9, 14256369), (27, 4752123), (47, 2729943), (81, 1584041), (141, 909981), (423, 303327), (1269, 101109), (3807, 33703)]