68750000

素因数分解:

$2^4\times 5^8\times {\mathrm{11}}^1$

素因数の和:59

約数の個数: 90

約数和(自身を含む): 181640532

約数和(自身を除く): 112890532

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 40, 44, 50, 55, 80, 88, 100, 110, 125, 176, 200, 220, 250, 275, 400, 440, 500, 550, 625, 880, 1000, 1100, 1250, 1375, 2000, 2200, 2500, 2750, 3125, 4400, 5000, 5500, 6250, 6875, 10000, 11000, 12500, 13750, 15625, 22000, 25000, 27500, 31250, 34375, 50000, 55000, 62500, 68750, 78125, 110000, 125000, 137500, 156250, 171875, 250000, 275000, 312500, 343750, 390625, 550000, 625000, 687500, 781250, 859375, 1250000, 1375000, 1562500, 1718750, 2750000, 3125000, 3437500, 4296875, 6250000, 6875000, 8593750, 13750000, 17187500, 34375000, 68750000]

約数ペア:

[(1, 68750000), (2, 34375000), (4, 17187500), (5, 13750000), (8, 8593750), (10, 6875000), (11, 6250000), (16, 4296875), (20, 3437500), (22, 3125000), (25, 2750000), (40, 1718750), (44, 1562500), (50, 1375000), (55, 1250000), (80, 859375), (88, 781250), (100, 687500), (110, 625000), (125, 550000), (176, 390625), (200, 343750), (220, 312500), (250, 275000), (275, 250000), (400, 171875), (440, 156250), (500, 137500), (550, 125000), (625, 110000), (880, 78125), (1000, 68750), (1100, 62500), (1250, 55000), (1375, 50000), (2000, 34375), (2200, 31250), (2500, 27500), (2750, 25000), (3125, 22000), (4400, 15625), (5000, 13750), (5500, 12500), (6250, 11000), (6875, 10000)]