208570000

素因数分解:

$2^4\times 5^4\times {\mathrm{20857}}^1$

素因数の和:20885

約数の個数: 50

約数和(自身を含む): 504993038

約数和(自身を除く): 296423038

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, 2500, 5000, 10000, 20857, 41714, 83428, 104285, 166856, 208570, 333712, 417140, 521425, 834280, 1042850, 1668560, 2085700, 2607125, 4171400, 5214250, 8342800, 10428500, 13035625, 20857000, 26071250, 41714000, 52142500, 104285000, 208570000]

約数ペア:

[(1, 208570000), (2, 104285000), (4, 52142500), (5, 41714000), (8, 26071250), (10, 20857000), (16, 13035625), (20, 10428500), (25, 8342800), (40, 5214250), (50, 4171400), (80, 2607125), (100, 2085700), (125, 1668560), (200, 1042850), (250, 834280), (400, 521425), (500, 417140), (625, 333712), (1000, 208570), (1250, 166856), (2000, 104285), (2500, 83428), (5000, 41714), (10000, 20857)]