18740000

素因数分解:

$2^5\times 5^4\times {\mathrm{937}}^1$

素因数の和:967

約数の個数: 60

約数和(自身を含む): 46152414

約数和(自身を除く): 27412414

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 625, 800, 937, 1000, 1250, 1874, 2000, 2500, 3748, 4000, 4685, 5000, 7496, 9370, 10000, 14992, 18740, 20000, 23425, 29984, 37480, 46850, 74960, 93700, 117125, 149920, 187400, 234250, 374800, 468500, 585625, 749600, 937000, 1171250, 1874000, 2342500, 3748000, 4685000, 9370000, 18740000]

約数ペア:

[(1, 18740000), (2, 9370000), (4, 4685000), (5, 3748000), (8, 2342500), (10, 1874000), (16, 1171250), (20, 937000), (25, 749600), (32, 585625), (40, 468500), (50, 374800), (80, 234250), (100, 187400), (125, 149920), (160, 117125), (200, 93700), (250, 74960), (400, 46850), (500, 37480), (625, 29984), (800, 23425), (937, 20000), (1000, 18740), (1250, 14992), (1874, 10000), (2000, 9370), (2500, 7496), (3748, 5000), (4000, 4685)]