78882800

素因数分解:

$2^4\times 5^2\times {\mathrm{197207}}^1$

素因数の和:197225

約数の個数: 30

約数和(自身を含む): 189516888

約数和(自身を除く): 110634088

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 197207, 394414, 788828, 986035, 1577656, 1972070, 3155312, 3944140, 4930175, 7888280, 9860350, 15776560, 19720700, 39441400, 78882800]

約数ペア:

[(1, 78882800), (2, 39441400), (4, 19720700), (5, 15776560), (8, 9860350), (10, 7888280), (16, 4930175), (20, 3944140), (25, 3155312), (40, 1972070), (50, 1577656), (80, 986035), (100, 788828), (200, 394414), (400, 197207)]