12780490780

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{7180051}}^1$

素因数の和:7180149

約数の個数: 24

約数和(自身を含む): 27140596560

約数和(自身を除く): 14360105780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 7180051, 14360102, 28720204, 35900255, 71800510, 143601020, 639024539, 1278049078, 2556098156, 3195122695, 6390245390, 12780490780]

約数ペア:

[(1, 12780490780), (2, 6390245390), (4, 3195122695), (5, 2556098156), (10, 1278049078), (20, 639024539), (89, 143601020), (178, 71800510), (356, 35900255), (445, 28720204), (890, 14360102), (1780, 7180051)]