18690819

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{653}}^1$

素因数の和:739

約数の個数: 32

約数和(自身を含む): 30136320

約数和(自身を除く): 11445501

約数列:

[1, 3, 7, 21, 29, 47, 87, 141, 203, 329, 609, 653, 987, 1363, 1959, 4089, 4571, 9541, 13713, 18937, 28623, 30691, 56811, 92073, 132559, 214837, 397677, 644511, 890039, 2670117, 6230273, 18690819]

約数ペア:

[(1, 18690819), (3, 6230273), (7, 2670117), (21, 890039), (29, 644511), (47, 397677), (87, 214837), (141, 132559), (203, 92073), (329, 56811), (609, 30691), (653, 28623), (987, 18937), (1363, 13713), (1959, 9541), (4089, 4571)]