28001200

素因数分解:

$2^4\times 5^2\times {\mathrm{70003}}^1$

素因数の和:70021

約数の個数: 30

約数和(自身を含む): 67273844

約数和(自身を除く): 39272644

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 70003, 140006, 280012, 350015, 560024, 700030, 1120048, 1400060, 1750075, 2800120, 3500150, 5600240, 7000300, 14000600, 28001200]

約数ペア:

[(1, 28001200), (2, 14000600), (4, 7000300), (5, 5600240), (8, 3500150), (10, 2800120), (16, 1750075), (20, 1400060), (25, 1120048), (40, 700030), (50, 560024), (80, 350015), (100, 280012), (200, 140006), (400, 70003)]