21904857

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{3671}}^1$

素因数の和:3710

約数の個数: 32

約数和(自身を含む): 37013760

約数和(自身を除く): 15108903

約数列:

[1, 3, 9, 13, 17, 27, 39, 51, 117, 153, 221, 351, 459, 663, 1989, 3671, 5967, 11013, 33039, 47723, 62407, 99117, 143169, 187221, 429507, 561663, 811291, 1288521, 1684989, 2433873, 7301619, 21904857]

約数ペア:

[(1, 21904857), (3, 7301619), (9, 2433873), (13, 1684989), (17, 1288521), (27, 811291), (39, 561663), (51, 429507), (117, 187221), (153, 143169), (221, 99117), (351, 62407), (459, 47723), (663, 33039), (1989, 11013), (3671, 5967)]