15721189

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{37}}^1\times {\mathrm{107}}^1$

素因数の和:193

約数の個数: 24

約数和(自身を含む): 18763488

約数和(自身を除く): 3042299

約数列:

[1, 11, 19, 37, 107, 209, 361, 407, 703, 1177, 2033, 3959, 3971, 7733, 13357, 22363, 38627, 43549, 75221, 146927, 424897, 827431, 1429199, 15721189]

約数ペア:

[(1, 15721189), (11, 1429199), (19, 827431), (37, 424897), (107, 146927), (209, 75221), (361, 43549), (407, 38627), (703, 22363), (1177, 13357), (2033, 7733), (3959, 3971)]