17981560

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{5051}}^1$

素因数の和:5151

約数の個数: 32

約数和(自身を含む): 40921200

約数和(自身を除く): 22939640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 5051, 10102, 20204, 25255, 40408, 50510, 101020, 202040, 449539, 899078, 1798156, 2247695, 3596312, 4495390, 8990780, 17981560]

約数ペア:

[(1, 17981560), (2, 8990780), (4, 4495390), (5, 3596312), (8, 2247695), (10, 1798156), (20, 899078), (40, 449539), (89, 202040), (178, 101020), (356, 50510), (445, 40408), (712, 25255), (890, 20204), (1780, 10102), (3560, 5051)]