21200901

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{2837}}^1$

素因数の和:2940

約数の個数: 16

約数和(自身を含む): 29424384

約数和(自身を除く): 8223483

約数列:

[1, 3, 47, 53, 141, 159, 2491, 2837, 7473, 8511, 133339, 150361, 400017, 451083, 7066967, 21200901]

約数ペア:

[(1, 21200901), (3, 7066967), (47, 451083), (53, 400017), (141, 150361), (159, 133339), (2491, 8511), (2837, 7473)]