248875000

素因数分解:

$2^3\times 5^6\times {\mathrm{11}}^1\times {\mathrm{181}}^1$

素因数の和:228

約数の個数: 112

約数和(自身を含む): 639835560

約数和(自身を除く): 390960560

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 88, 100, 110, 125, 181, 200, 220, 250, 275, 362, 440, 500, 550, 625, 724, 905, 1000, 1100, 1250, 1375, 1448, 1810, 1991, 2200, 2500, 2750, 3125, 3620, 3982, 4525, 5000, 5500, 6250, 6875, 7240, 7964, 9050, 9955, 11000, 12500, 13750, 15625, 15928, 18100, 19910, 22625, 25000, 27500, 31250, 34375, 36200, 39820, 45250, 49775, 55000, 62500, 68750, 79640, 90500, 99550, 113125, 125000, 137500, 171875, 181000, 199100, 226250, 248875, 275000, 343750, 398200, 452500, 497750, 565625, 687500, 905000, 995500, 1131250, 1244375, 1375000, 1991000, 2262500, 2488750, 2828125, 4525000, 4977500, 5656250, 6221875, 9955000, 11312500, 12443750, 22625000, 24887500, 31109375, 49775000, 62218750, 124437500, 248875000]

約数ペア:

[(1, 248875000), (2, 124437500), (4, 62218750), (5, 49775000), (8, 31109375), (10, 24887500), (11, 22625000), (20, 12443750), (22, 11312500), (25, 9955000), (40, 6221875), (44, 5656250), (50, 4977500), (55, 4525000), (88, 2828125), (100, 2488750), (110, 2262500), (125, 1991000), (181, 1375000), (200, 1244375), (220, 1131250), (250, 995500), (275, 905000), (362, 687500), (440, 565625), (500, 497750), (550, 452500), (625, 398200), (724, 343750), (905, 275000), (1000, 248875), (1100, 226250), (1250, 199100), (1375, 181000), (1448, 171875), (1810, 137500), (1991, 125000), (2200, 113125), (2500, 99550), (2750, 90500), (3125, 79640), (3620, 68750), (3982, 62500), (4525, 55000), (5000, 49775), (5500, 45250), (6250, 39820), (6875, 36200), (7240, 34375), (7964, 31250), (9050, 27500), (9955, 25000), (11000, 22625), (12500, 19910), (13750, 18100), (15625, 15928)]