81209840

素因数分解:

$2^4\times 5^1\times {\mathrm{1015123}}^1$

素因数の和:1015136

約数の個数: 20

約数和(自身を含む): 188813064

約数和(自身を除く): 107603224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1015123, 2030246, 4060492, 5075615, 8120984, 10151230, 16241968, 20302460, 40604920, 81209840]

約数ペア:

[(1, 81209840), (2, 40604920), (4, 20302460), (5, 16241968), (8, 10151230), (10, 8120984), (16, 5075615), (20, 4060492), (40, 2030246), (80, 1015123)]