127788160

素因数分解:

$2^7\times 5^1\times {\mathrm{199669}}^1$

素因数の和:199688

約数の個数: 32

約数和(自身を含む): 305495100

約数和(自身を除く): 177706940

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 199669, 399338, 798676, 998345, 1597352, 1996690, 3194704, 3993380, 6389408, 7986760, 12778816, 15973520, 25557632, 31947040, 63894080, 127788160]

約数ペア:

[(1, 127788160), (2, 63894080), (4, 31947040), (5, 25557632), (8, 15973520), (10, 12778816), (16, 7986760), (20, 6389408), (32, 3993380), (40, 3194704), (64, 1996690), (80, 1597352), (128, 998345), (160, 798676), (320, 399338), (640, 199669)]