219373

素因数分解:

$7^2\times {\mathrm{11}}^2\times {\mathrm{37}}^1$

素因数の和:73

約数の個数: 18

約数和(自身を含む): 288078

約数和(自身を除く): 68705

約数列:

[1, 7, 11, 37, 49, 77, 121, 259, 407, 539, 847, 1813, 2849, 4477, 5929, 19943, 31339, 219373]

約数ペア:

[(1, 219373), (7, 31339), (11, 19943), (37, 5929), (49, 4477), (77, 2849), (121, 1813), (259, 847), (407, 539)]