19987040

素因数分解:

$2^5\times 5^1\times {\mathrm{124919}}^1$

素因数の和:124934

約数の個数: 24

約数和(自身を含む): 47219760

約数和(自身を除く): 27232720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 124919, 249838, 499676, 624595, 999352, 1249190, 1998704, 2498380, 3997408, 4996760, 9993520, 19987040]

約数ペア:

[(1, 19987040), (2, 9993520), (4, 4996760), (5, 3997408), (8, 2498380), (10, 1998704), (16, 1249190), (20, 999352), (32, 624595), (40, 499676), (80, 249838), (160, 124919)]