20170000

素因数分解:

$2^4\times 5^4\times {\mathrm{2017}}^1$

素因数の和:2045

約数の個数: 50

約数和(自身を含む): 48857798

約数和(自身を除く): 28687798

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 625, 1000, 1250, 2000, 2017, 2500, 4034, 5000, 8068, 10000, 10085, 16136, 20170, 32272, 40340, 50425, 80680, 100850, 161360, 201700, 252125, 403400, 504250, 806800, 1008500, 1260625, 2017000, 2521250, 4034000, 5042500, 10085000, 20170000]

約数ペア:

[(1, 20170000), (2, 10085000), (4, 5042500), (5, 4034000), (8, 2521250), (10, 2017000), (16, 1260625), (20, 1008500), (25, 806800), (40, 504250), (50, 403400), (80, 252125), (100, 201700), (125, 161360), (200, 100850), (250, 80680), (400, 50425), (500, 40340), (625, 32272), (1000, 20170), (1250, 16136), (2000, 10085), (2017, 10000), (2500, 8068), (4034, 5000)]