21001057

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{829}}^1$

素因数の和:901

約数の個数: 24

約数和(自身を含む): 27250560

約数和(自身を除く): 6249503

約数列:

[1, 7, 11, 47, 49, 77, 329, 517, 539, 829, 2303, 3619, 5803, 9119, 25333, 38963, 40621, 63833, 272741, 428593, 446831, 1909187, 3000151, 21001057]

約数ペア:

[(1, 21001057), (7, 3000151), (11, 1909187), (47, 446831), (49, 428593), (77, 272741), (329, 63833), (517, 40621), (539, 38963), (829, 25333), (2303, 9119), (3619, 5803)]