28001001

素因数分解:

$3^1\times 7^2\times {\mathrm{239}}^1\times {\mathrm{797}}^1$

素因数の和:1053

約数の個数: 24

約数和(自身を含む): 43666560

約数和(自身を除く): 15665559

約数列:

[1, 3, 7, 21, 49, 147, 239, 717, 797, 1673, 2391, 5019, 5579, 11711, 16737, 35133, 39053, 117159, 190483, 571449, 1333381, 4000143, 9333667, 28001001]

約数ペア:

[(1, 28001001), (3, 9333667), (7, 4000143), (21, 1333381), (49, 571449), (147, 190483), (239, 117159), (717, 39053), (797, 35133), (1673, 16737), (2391, 11711), (5019, 5579)]