15880000

素因数分解:

$2^6\times 5^4\times {\mathrm{397}}^1$

素因数の和:429

約数の個数: 70

約数和(自身を含む): 39476426

約数和(自身を除く): 23596426

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 160, 200, 250, 320, 397, 400, 500, 625, 794, 800, 1000, 1250, 1588, 1600, 1985, 2000, 2500, 3176, 3970, 4000, 5000, 6352, 7940, 8000, 9925, 10000, 12704, 15880, 19850, 20000, 25408, 31760, 39700, 40000, 49625, 63520, 79400, 99250, 127040, 158800, 198500, 248125, 317600, 397000, 496250, 635200, 794000, 992500, 1588000, 1985000, 3176000, 3970000, 7940000, 15880000]

約数ペア:

[(1, 15880000), (2, 7940000), (4, 3970000), (5, 3176000), (8, 1985000), (10, 1588000), (16, 992500), (20, 794000), (25, 635200), (32, 496250), (40, 397000), (50, 317600), (64, 248125), (80, 198500), (100, 158800), (125, 127040), (160, 99250), (200, 79400), (250, 63520), (320, 49625), (397, 40000), (400, 39700), (500, 31760), (625, 25408), (794, 20000), (800, 19850), (1000, 15880), (1250, 12704), (1588, 10000), (1600, 9925), (1985, 8000), (2000, 7940), (2500, 6352), (3176, 5000), (3970, 4000)]