20406978

素因数分解:

$2^1\times 3^4\times {\mathrm{103}}^1\times {\mathrm{1223}}^1$

素因数の和:1340

約数の個数: 40

約数和(自身を含む): 46208448

約数和(自身を除く): 25801470

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 103, 162, 206, 309, 618, 927, 1223, 1854, 2446, 2781, 3669, 5562, 7338, 8343, 11007, 16686, 22014, 33021, 66042, 99063, 125969, 198126, 251938, 377907, 755814, 1133721, 2267442, 3401163, 6802326, 10203489, 20406978]

約数ペア:

[(1, 20406978), (2, 10203489), (3, 6802326), (6, 3401163), (9, 2267442), (18, 1133721), (27, 755814), (54, 377907), (81, 251938), (103, 198126), (162, 125969), (206, 99063), (309, 66042), (618, 33021), (927, 22014), (1223, 16686), (1854, 11007), (2446, 8343), (2781, 7338), (3669, 5562)]