280880000

素因数分解:

$2^7\times 5^4\times {\mathrm{3511}}^1$

素因数の和:3545

約数の個数: 80

約数和(自身を含む): 699432360

約数和(自身を除く): 418552360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 250, 320, 400, 500, 625, 640, 800, 1000, 1250, 1600, 2000, 2500, 3200, 3511, 4000, 5000, 7022, 8000, 10000, 14044, 16000, 17555, 20000, 28088, 35110, 40000, 56176, 70220, 80000, 87775, 112352, 140440, 175550, 224704, 280880, 351100, 438875, 449408, 561760, 702200, 877750, 1123520, 1404400, 1755500, 2194375, 2247040, 2808800, 3511000, 4388750, 5617600, 7022000, 8777500, 11235200, 14044000, 17555000, 28088000, 35110000, 56176000, 70220000, 140440000, 280880000]

約数ペア:

[(1, 280880000), (2, 140440000), (4, 70220000), (5, 56176000), (8, 35110000), (10, 28088000), (16, 17555000), (20, 14044000), (25, 11235200), (32, 8777500), (40, 7022000), (50, 5617600), (64, 4388750), (80, 3511000), (100, 2808800), (125, 2247040), (128, 2194375), (160, 1755500), (200, 1404400), (250, 1123520), (320, 877750), (400, 702200), (500, 561760), (625, 449408), (640, 438875), (800, 351100), (1000, 280880), (1250, 224704), (1600, 175550), (2000, 140440), (2500, 112352), (3200, 87775), (3511, 80000), (4000, 70220), (5000, 56176), (7022, 40000), (8000, 35110), (10000, 28088), (14044, 20000), (16000, 17555)]