164065840

素因数分解:

$2^4\times 5^1\times {\mathrm{2050823}}^1$

素因数の和:2050836

約数の個数: 20

約数和(自身を含む): 381453264

約数和(自身を除く): 217387424

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2050823, 4101646, 8203292, 10254115, 16406584, 20508230, 32813168, 41016460, 82032920, 164065840]

約数ペア:

[(1, 164065840), (2, 82032920), (4, 41016460), (5, 32813168), (8, 20508230), (10, 16406584), (16, 10254115), (20, 8203292), (40, 4101646), (80, 2050823)]