21478672

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{31219}}^1$

素因数の和:31270

約数の個数: 20

約数和(自身を含む): 42584080

約数和(自身を除く): 21105408

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 31219, 62438, 124876, 249752, 499504, 1342417, 2684834, 5369668, 10739336, 21478672]

約数ペア:

[(1, 21478672), (2, 10739336), (4, 5369668), (8, 2684834), (16, 1342417), (43, 499504), (86, 249752), (172, 124876), (344, 62438), (688, 31219)]