21400121296

素因数分解:

$2^4\times {\mathrm{1741}}^1\times {\mathrm{768241}}^1$

素因数の和:769990

約数の個数: 20

約数和(自身を含む): 41486604484

約数和(自身を除く): 20086483188

約数列:

[1, 2, 4, 8, 16, 1741, 3482, 6964, 13928, 27856, 768241, 1536482, 3072964, 6145928, 12291856, 1337507581, 2675015162, 5350030324, 10700060648, 21400121296]

約数ペア:

[(1, 21400121296), (2, 10700060648), (4, 5350030324), (8, 2675015162), (16, 1337507581), (1741, 12291856), (3482, 6145928), (6964, 3072964), (13928, 1536482), (27856, 768241)]