20884779

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{97}}^1\times {\mathrm{509}}^1$

素因数の和:659

約数の個数: 24

約数和(自身を含む): 31187520

約数和(自身を除く): 10302741

約数列:

[1, 3, 9, 47, 97, 141, 291, 423, 509, 873, 1527, 4559, 4581, 13677, 23923, 41031, 49373, 71769, 148119, 215307, 444357, 2320531, 6961593, 20884779]

約数ペア:

[(1, 20884779), (3, 6961593), (9, 2320531), (47, 444357), (97, 215307), (141, 148119), (291, 71769), (423, 49373), (509, 41031), (873, 23923), (1527, 13677), (4559, 4581)]