80306420

素因数分解:

$2^2\times 5^1\times {\mathrm{311}}^1\times {\mathrm{12911}}^1$

素因数の和:13231

約数の個数: 24

約数和(自身を含む): 169198848

約数和(自身を除く): 88892428

約数列:

[1, 2, 4, 5, 10, 20, 311, 622, 1244, 1555, 3110, 6220, 12911, 25822, 51644, 64555, 129110, 258220, 4015321, 8030642, 16061284, 20076605, 40153210, 80306420]

約数ペア:

[(1, 80306420), (2, 40153210), (4, 20076605), (5, 16061284), (10, 8030642), (20, 4015321), (311, 258220), (622, 129110), (1244, 64555), (1555, 51644), (3110, 25822), (6220, 12911)]