254080

素因数分解:

$2^7\times 5^1\times {\mathrm{397}}^1$

素因数の和:416

約数の個数: 32

約数和(自身を含む): 608940

約数和(自身を除く): 354860

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 397, 640, 794, 1588, 1985, 3176, 3970, 6352, 7940, 12704, 15880, 25408, 31760, 50816, 63520, 127040, 254080]

約数ペア:

[(1, 254080), (2, 127040), (4, 63520), (5, 50816), (8, 31760), (10, 25408), (16, 15880), (20, 12704), (32, 7940), (40, 6352), (64, 3970), (80, 3176), (128, 1985), (160, 1588), (320, 794), (397, 640)]