390978856

素因数分解:

$2^3\times {\mathrm{107}}^1\times {\mathrm{661}}^1\times {\mathrm{691}}^1$

素因数の和:1465

約数の個数: 32

約数和(自身を含む): 742128480

約数和(自身を除く): 351149624

約数列:

[1, 2, 4, 8, 107, 214, 428, 661, 691, 856, 1322, 1382, 2644, 2764, 5288, 5528, 70727, 73937, 141454, 147874, 282908, 295748, 456751, 565816, 591496, 913502, 1827004, 3654008, 48872357, 97744714, 195489428, 390978856]

約数ペア:

[(1, 390978856), (2, 195489428), (4, 97744714), (8, 48872357), (107, 3654008), (214, 1827004), (428, 913502), (661, 591496), (691, 565816), (856, 456751), (1322, 295748), (1382, 282908), (2644, 147874), (2764, 141454), (5288, 73937), (5528, 70727)]