20971964

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{8581}}^1$

素因数の和:8645

約数の個数: 24

約数和(自身を含む): 40369728

約数和(自身を除く): 19397764

約数列:

[1, 2, 4, 13, 26, 47, 52, 94, 188, 611, 1222, 2444, 8581, 17162, 34324, 111553, 223106, 403307, 446212, 806614, 1613228, 5242991, 10485982, 20971964]

約数ペア:

[(1, 20971964), (2, 10485982), (4, 5242991), (13, 1613228), (26, 806614), (47, 446212), (52, 403307), (94, 223106), (188, 111553), (611, 34324), (1222, 17162), (2444, 8581)]