2540800

素因数分解:

$2^8\times 5^2\times {\mathrm{397}}^1$

素因数の和:423

約数の個数: 54

約数和(自身を含む): 6304718

約数和(自身を除く): 3763918

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 397, 400, 640, 794, 800, 1280, 1588, 1600, 1985, 3176, 3200, 3970, 6352, 6400, 7940, 9925, 12704, 15880, 19850, 25408, 31760, 39700, 50816, 63520, 79400, 101632, 127040, 158800, 254080, 317600, 508160, 635200, 1270400, 2540800]

約数ペア:

[(1, 2540800), (2, 1270400), (4, 635200), (5, 508160), (8, 317600), (10, 254080), (16, 158800), (20, 127040), (25, 101632), (32, 79400), (40, 63520), (50, 50816), (64, 39700), (80, 31760), (100, 25408), (128, 19850), (160, 15880), (200, 12704), (256, 9925), (320, 7940), (397, 6400), (400, 6352), (640, 3970), (794, 3200), (800, 3176), (1280, 1985), (1588, 1600)]