128248515

素因数分解:

$3^4\times 5^1\times {\mathrm{316663}}^1$

素因数の和:316680

約数の個数: 20

約数和(自身を含む): 229898064

約数和(自身を除く): 101649549

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 316663, 949989, 1583315, 2849967, 4749945, 8549901, 14249835, 25649703, 42749505, 128248515]

約数ペア:

[(1, 128248515), (3, 42749505), (5, 25649703), (9, 14249835), (15, 8549901), (27, 4749945), (45, 2849967), (81, 1583315), (135, 949989), (405, 316663)]