18280000

素因数分解:

$2^6\times 5^4\times {\mathrm{457}}^1$

素因数の和:489

約数の個数: 70

約数和(自身を含む): 45427646

約数和(自身を除く): 27147646

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 160, 200, 250, 320, 400, 457, 500, 625, 800, 914, 1000, 1250, 1600, 1828, 2000, 2285, 2500, 3656, 4000, 4570, 5000, 7312, 8000, 9140, 10000, 11425, 14624, 18280, 20000, 22850, 29248, 36560, 40000, 45700, 57125, 73120, 91400, 114250, 146240, 182800, 228500, 285625, 365600, 457000, 571250, 731200, 914000, 1142500, 1828000, 2285000, 3656000, 4570000, 9140000, 18280000]

約数ペア:

[(1, 18280000), (2, 9140000), (4, 4570000), (5, 3656000), (8, 2285000), (10, 1828000), (16, 1142500), (20, 914000), (25, 731200), (32, 571250), (40, 457000), (50, 365600), (64, 285625), (80, 228500), (100, 182800), (125, 146240), (160, 114250), (200, 91400), (250, 73120), (320, 57125), (400, 45700), (457, 40000), (500, 36560), (625, 29248), (800, 22850), (914, 20000), (1000, 18280), (1250, 14624), (1600, 11425), (1828, 10000), (2000, 9140), (2285, 8000), (2500, 7312), (3656, 5000), (4000, 4570)]