258080000

素因数分解:

$2^8\times 5^4\times {\mathrm{1613}}^1$

素因数の和:1649

約数の個数: 90

約数和(自身を含む): 644132874

約数和(自身を除く): 386052874

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 250, 256, 320, 400, 500, 625, 640, 800, 1000, 1250, 1280, 1600, 1613, 2000, 2500, 3200, 3226, 4000, 5000, 6400, 6452, 8000, 8065, 10000, 12904, 16000, 16130, 20000, 25808, 32000, 32260, 40000, 40325, 51616, 64520, 80000, 80650, 103232, 129040, 160000, 161300, 201625, 206464, 258080, 322600, 403250, 412928, 516160, 645200, 806500, 1008125, 1032320, 1290400, 1613000, 2016250, 2064640, 2580800, 3226000, 4032500, 5161600, 6452000, 8065000, 10323200, 12904000, 16130000, 25808000, 32260000, 51616000, 64520000, 129040000, 258080000]

約数ペア:

[(1, 258080000), (2, 129040000), (4, 64520000), (5, 51616000), (8, 32260000), (10, 25808000), (16, 16130000), (20, 12904000), (25, 10323200), (32, 8065000), (40, 6452000), (50, 5161600), (64, 4032500), (80, 3226000), (100, 2580800), (125, 2064640), (128, 2016250), (160, 1613000), (200, 1290400), (250, 1032320), (256, 1008125), (320, 806500), (400, 645200), (500, 516160), (625, 412928), (640, 403250), (800, 322600), (1000, 258080), (1250, 206464), (1280, 201625), (1600, 161300), (1613, 160000), (2000, 129040), (2500, 103232), (3200, 80650), (3226, 80000), (4000, 64520), (5000, 51616), (6400, 40325), (6452, 40000), (8000, 32260), (8065, 32000), (10000, 25808), (12904, 20000), (16000, 16130)]