28020260

素因数分解:

$2^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{3529}}^1$

素因数の和:3935

約数の個数: 24

約数和(自身を含む): 59007480

約数和(自身を除く): 30987220

約数列:

[1, 2, 4, 5, 10, 20, 397, 794, 1588, 1985, 3529, 3970, 7058, 7940, 14116, 17645, 35290, 70580, 1401013, 2802026, 5604052, 7005065, 14010130, 28020260]

約数ペア:

[(1, 28020260), (2, 14010130), (4, 7005065), (5, 5604052), (10, 2802026), (20, 1401013), (397, 70580), (794, 35290), (1588, 17645), (1985, 14116), (3529, 7940), (3970, 7058)]