905120000

素因数分解:

$2^8\times 5^4\times {\mathrm{5657}}^1$

素因数の和:5693

約数の個数: 90

約数和(自身を含む): 2258056878

約数和(自身を除く): 1352936878

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 250, 256, 320, 400, 500, 625, 640, 800, 1000, 1250, 1280, 1600, 2000, 2500, 3200, 4000, 5000, 5657, 6400, 8000, 10000, 11314, 16000, 20000, 22628, 28285, 32000, 40000, 45256, 56570, 80000, 90512, 113140, 141425, 160000, 181024, 226280, 282850, 362048, 452560, 565700, 707125, 724096, 905120, 1131400, 1414250, 1448192, 1810240, 2262800, 2828500, 3535625, 3620480, 4525600, 5657000, 7071250, 7240960, 9051200, 11314000, 14142500, 18102400, 22628000, 28285000, 36204800, 45256000, 56570000, 90512000, 113140000, 181024000, 226280000, 452560000, 905120000]

約数ペア:

[(1, 905120000), (2, 452560000), (4, 226280000), (5, 181024000), (8, 113140000), (10, 90512000), (16, 56570000), (20, 45256000), (25, 36204800), (32, 28285000), (40, 22628000), (50, 18102400), (64, 14142500), (80, 11314000), (100, 9051200), (125, 7240960), (128, 7071250), (160, 5657000), (200, 4525600), (250, 3620480), (256, 3535625), (320, 2828500), (400, 2262800), (500, 1810240), (625, 1448192), (640, 1414250), (800, 1131400), (1000, 905120), (1250, 724096), (1280, 707125), (1600, 565700), (2000, 452560), (2500, 362048), (3200, 282850), (4000, 226280), (5000, 181024), (5657, 160000), (6400, 141425), (8000, 113140), (10000, 90512), (11314, 80000), (16000, 56570), (20000, 45256), (22628, 40000), (28285, 32000)]