261159915

素因数分解:

$3^1\times 5^1\times {\mathrm{83}}^1\times {\mathrm{209767}}^1$

素因数の和:209858

約数の個数: 16

約数和(自身を含む): 422892288

約数和(自身を除く): 161732373

約数列:

[1, 3, 5, 15, 83, 249, 415, 1245, 209767, 629301, 1048835, 3146505, 17410661, 52231983, 87053305, 261159915]

約数ペア:

[(1, 261159915), (3, 87053305), (5, 52231983), (15, 17410661), (83, 3146505), (249, 1048835), (415, 629301), (1245, 209767)]