21878044

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{109}}^1\times {\mathrm{139}}^1$

素因数の和:290

約数の個数: 36

約数和(自身を含む): 41071800

約数和(自身を除く): 19193756

約数列:

[1, 2, 4, 19, 38, 76, 109, 139, 218, 278, 361, 436, 556, 722, 1444, 2071, 2641, 4142, 5282, 8284, 10564, 15151, 30302, 39349, 50179, 60604, 78698, 100358, 157396, 200716, 287869, 575738, 1151476, 5469511, 10939022, 21878044]

約数ペア:

[(1, 21878044), (2, 10939022), (4, 5469511), (19, 1151476), (38, 575738), (76, 287869), (109, 200716), (139, 157396), (218, 100358), (278, 78698), (361, 60604), (436, 50179), (556, 39349), (722, 30302), (1444, 15151), (2071, 10564), (2641, 8284), (4142, 5282)]