81139888

素因数分解:

$2^4\times {\mathrm{223}}^1\times {\mathrm{22741}}^1$

素因数の和:22972

約数の個数: 20

約数和(自身を含む): 157920448

約数和(自身を除く): 76780560

約数列:

[1, 2, 4, 8, 16, 223, 446, 892, 1784, 3568, 22741, 45482, 90964, 181928, 363856, 5071243, 10142486, 20284972, 40569944, 81139888]

約数ペア:

[(1, 81139888), (2, 40569944), (4, 20284972), (8, 10142486), (16, 5071243), (223, 363856), (446, 181928), (892, 90964), (1784, 45482), (3568, 22741)]