18861964

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{38971}}^1$

素因数の和:38997

約数の個数: 18

約数和(自身を含む): 36282932

約数和(自身を除く): 17420968

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 38971, 77942, 155884, 428681, 857362, 1714724, 4715491, 9430982, 18861964]

約数ペア:

[(1, 18861964), (2, 9430982), (4, 4715491), (11, 1714724), (22, 857362), (44, 428681), (121, 155884), (242, 77942), (484, 38971)]