38802220

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{21799}}^1$

素因数の和:21897

約数の個数: 24

約数和(自身を含む): 82404000

約数和(自身を除く): 43601780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 21799, 43598, 87196, 108995, 217990, 435980, 1940111, 3880222, 7760444, 9700555, 19401110, 38802220]

約数ペア:

[(1, 38802220), (2, 19401110), (4, 9700555), (5, 7760444), (10, 3880222), (20, 1940111), (89, 435980), (178, 217990), (356, 108995), (445, 87196), (890, 43598), (1780, 21799)]