20388742

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{173}}^1\times {\mathrm{487}}^1$

素因数の和:684

約数の個数: 24

約数和(自身を含む): 33879888

約数和(自身を除く): 13491146

約数列:

[1, 2, 11, 22, 121, 173, 242, 346, 487, 974, 1903, 3806, 5357, 10714, 20933, 41866, 58927, 84251, 117854, 168502, 926761, 1853522, 10194371, 20388742]

約数ペア:

[(1, 20388742), (2, 10194371), (11, 1853522), (22, 926761), (121, 168502), (173, 117854), (242, 84251), (346, 58927), (487, 41866), (974, 20933), (1903, 10714), (3806, 5357)]