205172005

素因数分解:

$5^1\times {\mathrm{151}}^1\times {\mathrm{331}}^1\times {\mathrm{821}}^1$

素因数の和:1308

約数の個数: 16

約数和(自身を含む): 248888448

約数和(自身を除く): 43716443

約数列:

[1, 5, 151, 331, 755, 821, 1655, 4105, 49981, 123971, 249905, 271751, 619855, 1358755, 41034401, 205172005]

約数ペア:

[(1, 205172005), (5, 41034401), (151, 1358755), (331, 619855), (755, 271751), (821, 249905), (1655, 123971), (4105, 49981)]