320428000

素因数分解:

$2^5\times 5^3\times {\mathrm{80107}}^1$

素因数の和:80132

約数の個数: 48

約数和(自身を含む): 787301424

約数和(自身を除く): 466873424

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 800, 1000, 2000, 4000, 80107, 160214, 320428, 400535, 640856, 801070, 1281712, 1602140, 2002675, 2563424, 3204280, 4005350, 6408560, 8010700, 10013375, 12817120, 16021400, 20026750, 32042800, 40053500, 64085600, 80107000, 160214000, 320428000]

約数ペア:

[(1, 320428000), (2, 160214000), (4, 80107000), (5, 64085600), (8, 40053500), (10, 32042800), (16, 20026750), (20, 16021400), (25, 12817120), (32, 10013375), (40, 8010700), (50, 6408560), (80, 4005350), (100, 3204280), (125, 2563424), (160, 2002675), (200, 1602140), (250, 1281712), (400, 801070), (500, 640856), (800, 400535), (1000, 320428), (2000, 160214), (4000, 80107)]