639955000

素因数分解:

$2^3\times 5^4\times {\mathrm{149}}^1\times {\mathrm{859}}^1$

素因数の和:1034

約数の個数: 80

約数和(自身を含む): 1511235000

約数和(自身を除く): 871280000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 149, 200, 250, 298, 500, 596, 625, 745, 859, 1000, 1192, 1250, 1490, 1718, 2500, 2980, 3436, 3725, 4295, 5000, 5960, 6872, 7450, 8590, 14900, 17180, 18625, 21475, 29800, 34360, 37250, 42950, 74500, 85900, 93125, 107375, 127991, 149000, 171800, 186250, 214750, 255982, 372500, 429500, 511964, 536875, 639955, 745000, 859000, 1023928, 1073750, 1279910, 2147500, 2559820, 3199775, 4295000, 5119640, 6399550, 12799100, 15998875, 25598200, 31997750, 63995500, 79994375, 127991000, 159988750, 319977500, 639955000]

約数ペア:

[(1, 639955000), (2, 319977500), (4, 159988750), (5, 127991000), (8, 79994375), (10, 63995500), (20, 31997750), (25, 25598200), (40, 15998875), (50, 12799100), (100, 6399550), (125, 5119640), (149, 4295000), (200, 3199775), (250, 2559820), (298, 2147500), (500, 1279910), (596, 1073750), (625, 1023928), (745, 859000), (859, 745000), (1000, 639955), (1192, 536875), (1250, 511964), (1490, 429500), (1718, 372500), (2500, 255982), (2980, 214750), (3436, 186250), (3725, 171800), (4295, 149000), (5000, 127991), (5960, 107375), (6872, 93125), (7450, 85900), (8590, 74500), (14900, 42950), (17180, 37250), (18625, 34360), (21475, 29800)]