1261891965

素因数分解:

$3^1\times 5^1\times {\mathrm{661}}^1\times {\mathrm{127271}}^1$

素因数の和:127940

約数の個数: 16

約数和(自身を含む): 2022097536

約数和(自身を除く): 760205571

約数列:

[1, 3, 5, 15, 661, 1983, 3305, 9915, 127271, 381813, 636355, 1909065, 84126131, 252378393, 420630655, 1261891965]

約数ペア:

[(1, 1261891965), (3, 420630655), (5, 252378393), (15, 84126131), (661, 1909065), (1983, 636355), (3305, 381813), (9915, 127271)]