68000000

素因数分解:

$2^8\times 5^6\times {\mathrm{17}}^1$

素因数の和:63

約数の個数: 126

約数和(自身を含む): 179646138

約数和(自身を除く): 111646138

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 25, 32, 34, 40, 50, 64, 68, 80, 85, 100, 125, 128, 136, 160, 170, 200, 250, 256, 272, 320, 340, 400, 425, 500, 544, 625, 640, 680, 800, 850, 1000, 1088, 1250, 1280, 1360, 1600, 1700, 2000, 2125, 2176, 2500, 2720, 3125, 3200, 3400, 4000, 4250, 4352, 5000, 5440, 6250, 6400, 6800, 8000, 8500, 10000, 10625, 10880, 12500, 13600, 15625, 16000, 17000, 20000, 21250, 21760, 25000, 27200, 31250, 32000, 34000, 40000, 42500, 50000, 53125, 54400, 62500, 68000, 80000, 85000, 100000, 106250, 108800, 125000, 136000, 160000, 170000, 200000, 212500, 250000, 265625, 272000, 340000, 400000, 425000, 500000, 531250, 544000, 680000, 800000, 850000, 1000000, 1062500, 1360000, 1700000, 2000000, 2125000, 2720000, 3400000, 4000000, 4250000, 6800000, 8500000, 13600000, 17000000, 34000000, 68000000]

約数ペア:

[(1, 68000000), (2, 34000000), (4, 17000000), (5, 13600000), (8, 8500000), (10, 6800000), (16, 4250000), (17, 4000000), (20, 3400000), (25, 2720000), (32, 2125000), (34, 2000000), (40, 1700000), (50, 1360000), (64, 1062500), (68, 1000000), (80, 850000), (85, 800000), (100, 680000), (125, 544000), (128, 531250), (136, 500000), (160, 425000), (170, 400000), (200, 340000), (250, 272000), (256, 265625), (272, 250000), (320, 212500), (340, 200000), (400, 170000), (425, 160000), (500, 136000), (544, 125000), (625, 108800), (640, 106250), (680, 100000), (800, 85000), (850, 80000), (1000, 68000), (1088, 62500), (1250, 54400), (1280, 53125), (1360, 50000), (1600, 42500), (1700, 40000), (2000, 34000), (2125, 32000), (2176, 31250), (2500, 27200), (2720, 25000), (3125, 21760), (3200, 21250), (3400, 20000), (4000, 17000), (4250, 16000), (4352, 15625), (5000, 13600), (5440, 12500), (6250, 10880), (6400, 10625), (6800, 10000), (8000, 8500)]