81355355

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1\times {\mathrm{97}}^1$

素因数の和:275

約数の個数: 32

約数和(自身を含む): 104315904

約数和(自身を除く): 22960549

約数列:

[1, 5, 43, 47, 83, 97, 215, 235, 415, 485, 2021, 3569, 3901, 4171, 4559, 8051, 10105, 17845, 19505, 20855, 22795, 40255, 167743, 196037, 346193, 378397, 838715, 980185, 1730965, 1891985, 16271071, 81355355]

約数ペア:

[(1, 81355355), (5, 16271071), (43, 1891985), (47, 1730965), (83, 980185), (97, 838715), (215, 378397), (235, 346193), (415, 196037), (485, 167743), (2021, 40255), (3569, 22795), (3901, 20855), (4171, 19505), (4559, 17845), (8051, 10105)]