21777404

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{6971}}^1$

素因数の和:7057

約数の個数: 24

約数和(自身を含む): 42166656

約数和(自身を除く): 20389252

約数列:

[1, 2, 4, 11, 22, 44, 71, 142, 284, 781, 1562, 3124, 6971, 13942, 27884, 76681, 153362, 306724, 494941, 989882, 1979764, 5444351, 10888702, 21777404]

約数ペア:

[(1, 21777404), (2, 10888702), (4, 5444351), (11, 1979764), (22, 989882), (44, 494941), (71, 306724), (142, 153362), (284, 76681), (781, 27884), (1562, 13942), (3124, 6971)]