81248000

素因数分解:

$2^8\times 5^3\times {\mathrm{2539}}^1$

素因数の和:2570

約数の個数: 72

約数和(自身を含む): 202478640

約数和(自身を除く): 121230640

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, 640, 800, 1000, 1280, 1600, 2000, 2539, 3200, 4000, 5078, 6400, 8000, 10156, 12695, 16000, 20312, 25390, 32000, 40624, 50780, 63475, 81248, 101560, 126950, 162496, 203120, 253900, 317375, 324992, 406240, 507800, 634750, 649984, 812480, 1015600, 1269500, 1624960, 2031200, 2539000, 3249920, 4062400, 5078000, 8124800, 10156000, 16249600, 20312000, 40624000, 81248000]

約数ペア:

[(1, 81248000), (2, 40624000), (4, 20312000), (5, 16249600), (8, 10156000), (10, 8124800), (16, 5078000), (20, 4062400), (25, 3249920), (32, 2539000), (40, 2031200), (50, 1624960), (64, 1269500), (80, 1015600), (100, 812480), (125, 649984), (128, 634750), (160, 507800), (200, 406240), (250, 324992), (256, 317375), (320, 253900), (400, 203120), (500, 162496), (640, 126950), (800, 101560), (1000, 81248), (1280, 63475), (1600, 50780), (2000, 40624), (2539, 32000), (3200, 25390), (4000, 20312), (5078, 16000), (6400, 12695), (8000, 10156)]