12704000

素因数分解:

$2^8\times 5^3\times {\mathrm{397}}^1$

素因数の和:428

約数の個数: 72

約数和(自身を含む): 31726968

約数和(自身を除く): 19022968

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, 397, 400, 500, 640, 794, 800, 1000, 1280, 1588, 1600, 1985, 2000, 3176, 3200, 3970, 4000, 6352, 6400, 7940, 8000, 9925, 12704, 15880, 16000, 19850, 25408, 31760, 32000, 39700, 49625, 50816, 63520, 79400, 99250, 101632, 127040, 158800, 198500, 254080, 317600, 397000, 508160, 635200, 794000, 1270400, 1588000, 2540800, 3176000, 6352000, 12704000]

約数ペア:

[(1, 12704000), (2, 6352000), (4, 3176000), (5, 2540800), (8, 1588000), (10, 1270400), (16, 794000), (20, 635200), (25, 508160), (32, 397000), (40, 317600), (50, 254080), (64, 198500), (80, 158800), (100, 127040), (125, 101632), (128, 99250), (160, 79400), (200, 63520), (250, 50816), (256, 49625), (320, 39700), (397, 32000), (400, 31760), (500, 25408), (640, 19850), (794, 16000), (800, 15880), (1000, 12704), (1280, 9925), (1588, 8000), (1600, 7940), (1985, 6400), (2000, 6352), (3176, 4000), (3200, 3970)]