18813489

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{107}}^1$

素因数の和:229

約数の個数: 32

約数和(自身を含む): 27371520

約数和(自身を除く): 8558031

約数列:

[1, 3, 29, 43, 47, 87, 107, 129, 141, 321, 1247, 1363, 2021, 3103, 3741, 4089, 4601, 5029, 6063, 9309, 13803, 15087, 58609, 133429, 145841, 175827, 216247, 400287, 437523, 648741, 6271163, 18813489]

約数ペア:

[(1, 18813489), (3, 6271163), (29, 648741), (43, 437523), (47, 400287), (87, 216247), (107, 175827), (129, 145841), (141, 133429), (321, 58609), (1247, 15087), (1363, 13803), (2021, 9309), (3103, 6063), (3741, 5029), (4089, 4601)]