25408000

素因数分解:

$2^9\times 5^3\times {\mathrm{397}}^1$

素因数の和:430

約数の個数: 80

約数和(自身を含む): 63516024

約数和(自身を除く): 38108024

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, 512, 640, 794, 800, 1000, 1280, 1588, 1600, 1985, 2000, 2560, 3176, 3200, 3970, 4000, 6352, 6400, 7940, 8000, 9925, 12704, 12800, 15880, 16000, 19850, 25408, 31760, 32000, 39700, 49625, 50816, 63520, 64000, 79400, 99250, 101632, 127040, 158800, 198500, 203264, 254080, 317600, 397000, 508160, 635200, 794000, 1016320, 1270400, 1588000, 2540800, 3176000, 5081600, 6352000, 12704000, 25408000]

約数ペア:

[(1, 25408000), (2, 12704000), (4, 6352000), (5, 5081600), (8, 3176000), (10, 2540800), (16, 1588000), (20, 1270400), (25, 1016320), (32, 794000), (40, 635200), (50, 508160), (64, 397000), (80, 317600), (100, 254080), (125, 203264), (128, 198500), (160, 158800), (200, 127040), (250, 101632), (256, 99250), (320, 79400), (397, 64000), (400, 63520), (500, 50816), (512, 49625), (640, 39700), (794, 32000), (800, 31760), (1000, 25408), (1280, 19850), (1588, 16000), (1600, 15880), (1985, 12800), (2000, 12704), (2560, 9925), (3176, 8000), (3200, 7940), (3970, 6400), (4000, 6352)]