78788000

素因数分解:

$2^5\times 5^3\times {\mathrm{19697}}^1$

素因数の和:19722

約数の個数: 48

約数和(自身を含む): 193591944

約数和(自身を除く): 114803944

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 800, 1000, 2000, 4000, 19697, 39394, 78788, 98485, 157576, 196970, 315152, 393940, 492425, 630304, 787880, 984850, 1575760, 1969700, 2462125, 3151520, 3939400, 4924250, 7878800, 9848500, 15757600, 19697000, 39394000, 78788000]

約数ペア:

[(1, 78788000), (2, 39394000), (4, 19697000), (5, 15757600), (8, 9848500), (10, 7878800), (16, 4924250), (20, 3939400), (25, 3151520), (32, 2462125), (40, 1969700), (50, 1575760), (80, 984850), (100, 787880), (125, 630304), (160, 492425), (200, 393940), (250, 315152), (400, 196970), (500, 157576), (800, 98485), (1000, 78788), (2000, 39394), (4000, 19697)]