80646220

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{30781}}^1$

素因数の和:30921

約数の個数: 24

約数和(自身を含む): 170655408

約数和(自身を除く): 90009188

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 30781, 61562, 123124, 153905, 307810, 615620, 4032311, 8064622, 16129244, 20161555, 40323110, 80646220]

約数ペア:

[(1, 80646220), (2, 40323110), (4, 20161555), (5, 16129244), (10, 8064622), (20, 4032311), (131, 615620), (262, 307810), (524, 153905), (655, 123124), (1310, 61562), (2620, 30781)]