80720717

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{977}}^1$

素因数の和:1061

約数の個数: 32

約数和(自身を含む): 107032320

約数和(自身を除く): 26311603

約数列:

[1, 7, 11, 29, 37, 77, 203, 259, 319, 407, 977, 1073, 2233, 2849, 6839, 7511, 10747, 11803, 28333, 36149, 75229, 82621, 198331, 253043, 311663, 397639, 1048321, 2181641, 2783473, 7338247, 11531531, 80720717]

約数ペア:

[(1, 80720717), (7, 11531531), (11, 7338247), (29, 2783473), (37, 2181641), (77, 1048321), (203, 397639), (259, 311663), (319, 253043), (407, 198331), (977, 82621), (1073, 75229), (2233, 36149), (2849, 28333), (6839, 11803), (7511, 10747)]