81212816

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{220687}}^1$

素因数の和:220718

約数の個数: 20

約数和(自身を含む): 164191872

約数和(自身を除く): 82979056

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 184, 368, 220687, 441374, 882748, 1765496, 3530992, 5075801, 10151602, 20303204, 40606408, 81212816]

約数ペア:

[(1, 81212816), (2, 40606408), (4, 20303204), (8, 10151602), (16, 5075801), (23, 3530992), (46, 1765496), (92, 882748), (184, 441374), (368, 220687)]