217967519

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{907}}^1\times {\mathrm{3121}}^1$

素因数の和:4046

約数の個数: 16

約数和(自身を含む): 272138496

約数和(自身を除く): 54170977

約数列:

[1, 7, 11, 77, 907, 3121, 6349, 9977, 21847, 34331, 69839, 240317, 2830747, 19815229, 31138217, 217967519]

約数ペア:

[(1, 217967519), (7, 31138217), (11, 19815229), (77, 2830747), (907, 240317), (3121, 69839), (6349, 34331), (9977, 21847)]