8189780

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{107}}^1$

素因数の和:248

約数の個数: 48

約数和(自身を含む): 17962560

約数和(自身を除く): 9772780

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 89, 107, 172, 178, 214, 215, 356, 428, 430, 445, 535, 860, 890, 1070, 1780, 2140, 3827, 4601, 7654, 9202, 9523, 15308, 18404, 19046, 19135, 23005, 38092, 38270, 46010, 47615, 76540, 92020, 95230, 190460, 409489, 818978, 1637956, 2047445, 4094890, 8189780]

約数ペア:

[(1, 8189780), (2, 4094890), (4, 2047445), (5, 1637956), (10, 818978), (20, 409489), (43, 190460), (86, 95230), (89, 92020), (107, 76540), (172, 47615), (178, 46010), (214, 38270), (215, 38092), (356, 23005), (428, 19135), (430, 19046), (445, 18404), (535, 15308), (860, 9523), (890, 9202), (1070, 7654), (1780, 4601), (2140, 3827)]