712420

素因数分解:

$2^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{199}}^1$

素因数の和:387

約数の個数: 24

約数和(自身を含む): 1512000

約数和(自身を除く): 799580

約数列:

[1, 2, 4, 5, 10, 20, 179, 199, 358, 398, 716, 796, 895, 995, 1790, 1990, 3580, 3980, 35621, 71242, 142484, 178105, 356210, 712420]

約数ペア:

[(1, 712420), (2, 356210), (4, 178105), (5, 142484), (10, 71242), (20, 35621), (179, 3980), (199, 3580), (358, 1990), (398, 1790), (716, 995), (796, 895)]