661189072

素因数分解:

$2^4\times {\mathrm{167}}^1\times {\mathrm{247451}}^1$

素因数の和:247626

約数の個数: 20

約数和(自身を含む): 1288730016

約数和(自身を除く): 627540944

約数列:

[1, 2, 4, 8, 16, 167, 334, 668, 1336, 2672, 247451, 494902, 989804, 1979608, 3959216, 41324317, 82648634, 165297268, 330594536, 661189072]

約数ペア:

[(1, 661189072), (2, 330594536), (4, 165297268), (8, 82648634), (16, 41324317), (167, 3959216), (334, 1979608), (668, 989804), (1336, 494902), (2672, 247451)]