161491312

素因数分解:

$2^4\times {\mathrm{139}}^1\times {\mathrm{72613}}^1$

素因数の和:72760

約数の個数: 20

約数和(自身を含む): 315144760

約数和(自身を除く): 153653448

約数列:

[1, 2, 4, 8, 16, 139, 278, 556, 1112, 2224, 72613, 145226, 290452, 580904, 1161808, 10093207, 20186414, 40372828, 80745656, 161491312]

約数ペア:

[(1, 161491312), (2, 80745656), (4, 40372828), (8, 20186414), (16, 10093207), (139, 1161808), (278, 580904), (556, 290452), (1112, 145226), (2224, 72613)]