21721954

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{151}}^1\times {\mathrm{4231}}^1$

素因数の和:4401

約数の個数: 16

約数和(自身を含む): 34736256

約数和(自身を除く): 13014302

約数列:

[1, 2, 17, 34, 151, 302, 2567, 4231, 5134, 8462, 71927, 143854, 638881, 1277762, 10860977, 21721954]

約数ペア:

[(1, 21721954), (2, 10860977), (17, 1277762), (34, 638881), (151, 143854), (302, 71927), (2567, 8462), (4231, 5134)]