20961496

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{63907}}^1$

素因数の和:63954

約数の個数: 16

約数和(自身を含む): 40262040

約数和(自身を除く): 19300544

約数列:

[1, 2, 4, 8, 41, 82, 164, 328, 63907, 127814, 255628, 511256, 2620187, 5240374, 10480748, 20961496]

約数ペア:

[(1, 20961496), (2, 10480748), (4, 5240374), (8, 2620187), (41, 511256), (82, 255628), (164, 127814), (328, 63907)]