12486400

素因数分解:

$2^8\times 5^2\times {\mathrm{1951}}^1$

素因数の和:1977

約数の個数: 54

約数和(自身を含む): 30921632

約数和(自身を除く): 18435232

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 640, 800, 1280, 1600, 1951, 3200, 3902, 6400, 7804, 9755, 15608, 19510, 31216, 39020, 48775, 62432, 78040, 97550, 124864, 156080, 195100, 249728, 312160, 390200, 499456, 624320, 780400, 1248640, 1560800, 2497280, 3121600, 6243200, 12486400]

約数ペア:

[(1, 12486400), (2, 6243200), (4, 3121600), (5, 2497280), (8, 1560800), (10, 1248640), (16, 780400), (20, 624320), (25, 499456), (32, 390200), (40, 312160), (50, 249728), (64, 195100), (80, 156080), (100, 124864), (128, 97550), (160, 78040), (200, 62432), (256, 48775), (320, 39020), (400, 31216), (640, 19510), (800, 15608), (1280, 9755), (1600, 7804), (1951, 6400), (3200, 3902)]