79438720

素因数分解:

$2^7\times 5^1\times {\mathrm{124123}}^1$

素因数の和:124142

約数の個数: 32

約数和(自身を含む): 189909720

約数和(自身を除く): 110471000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 124123, 248246, 496492, 620615, 992984, 1241230, 1985968, 2482460, 3971936, 4964920, 7943872, 9929840, 15887744, 19859680, 39719360, 79438720]

約数ペア:

[(1, 79438720), (2, 39719360), (4, 19859680), (5, 15887744), (8, 9929840), (10, 7943872), (16, 4964920), (20, 3971936), (32, 2482460), (40, 1985968), (64, 1241230), (80, 992984), (128, 620615), (160, 496492), (320, 248246), (640, 124123)]