81643160

素因数分解:

$2^3\times 5^1\times {\mathrm{2041079}}^1$

素因数の和:2041090

約数の個数: 16

約数和(自身を含む): 183697200

約数和(自身を除く): 102054040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2041079, 4082158, 8164316, 10205395, 16328632, 20410790, 40821580, 81643160]

約数ペア:

[(1, 81643160), (2, 40821580), (4, 20410790), (5, 16328632), (8, 10205395), (10, 8164316), (20, 4082158), (40, 2041079)]