81190400

素因数分解:

$2^9\times 5^2\times {\mathrm{6343}}^1$

素因数の和:6371

約数の個数: 60

約数和(自身を含む): 201187272

約数和(自身を除く): 119996872

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 512, 640, 800, 1280, 1600, 2560, 3200, 6343, 6400, 12686, 12800, 25372, 31715, 50744, 63430, 101488, 126860, 158575, 202976, 253720, 317150, 405952, 507440, 634300, 811904, 1014880, 1268600, 1623808, 2029760, 2537200, 3247616, 4059520, 5074400, 8119040, 10148800, 16238080, 20297600, 40595200, 81190400]

約数ペア:

[(1, 81190400), (2, 40595200), (4, 20297600), (5, 16238080), (8, 10148800), (10, 8119040), (16, 5074400), (20, 4059520), (25, 3247616), (32, 2537200), (40, 2029760), (50, 1623808), (64, 1268600), (80, 1014880), (100, 811904), (128, 634300), (160, 507440), (200, 405952), (256, 317150), (320, 253720), (400, 202976), (512, 158575), (640, 126860), (800, 101488), (1280, 63430), (1600, 50744), (2560, 31715), (3200, 25372), (6343, 12800), (6400, 12686)]