20739089

素因数分解:

$7^1\times {\mathrm{19}}^2\times {\mathrm{29}}^1\times {\mathrm{283}}^1$

素因数の和:357

約数の個数: 24

約数和(自身を含む): 25968960

約数和(自身を除く): 5229871

約数列:

[1, 7, 19, 29, 133, 203, 283, 361, 551, 1981, 2527, 3857, 5377, 8207, 10469, 37639, 57449, 73283, 102163, 155933, 715141, 1091531, 2962727, 20739089]

約数ペア:

[(1, 20739089), (7, 2962727), (19, 1091531), (29, 715141), (133, 155933), (203, 102163), (283, 73283), (361, 57449), (551, 37639), (1981, 10469), (2527, 8207), (3857, 5377)]