205338640

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{197441}}^1$

素因数の和:197467

約数の個数: 40

約数和(自身を含む): 514138968

約数和(自身を除く): 308800328

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 197441, 394882, 789764, 987205, 1579528, 1974410, 2566733, 3159056, 3948820, 5133466, 7897640, 10266932, 12833665, 15795280, 20533864, 25667330, 41067728, 51334660, 102669320, 205338640]

約数ペア:

[(1, 205338640), (2, 102669320), (4, 51334660), (5, 41067728), (8, 25667330), (10, 20533864), (13, 15795280), (16, 12833665), (20, 10266932), (26, 7897640), (40, 5133466), (52, 3948820), (65, 3159056), (80, 2566733), (104, 1974410), (130, 1579528), (208, 987205), (260, 789764), (520, 394882), (1040, 197441)]