399352877

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{12743}}^1$

素因数の和:12809

約数の個数: 24

約数和(自身を含む): 515265408

約数和(自身を除く): 115912531

約数列:

[1, 7, 11, 37, 77, 121, 259, 407, 847, 2849, 4477, 12743, 31339, 89201, 140173, 471491, 981211, 1541903, 3300437, 5186401, 10793321, 36304807, 57050411, 399352877]

約数ペア:

[(1, 399352877), (7, 57050411), (11, 36304807), (37, 10793321), (77, 5186401), (121, 3300437), (259, 1541903), (407, 981211), (847, 471491), (2849, 140173), (4477, 89201), (12743, 31339)]