19720728

素因数分解:

$2^3\times 3^2\times {\mathrm{273899}}^1$

素因数の和:273911

約数の個数: 24

約数和(自身を含む): 53410500

約数和(自身を除く): 33689772

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 273899, 547798, 821697, 1095596, 1643394, 2191192, 2465091, 3286788, 4930182, 6573576, 9860364, 19720728]

約数ペア:

[(1, 19720728), (2, 9860364), (3, 6573576), (4, 4930182), (6, 3286788), (8, 2465091), (9, 2191192), (12, 1643394), (18, 1095596), (24, 821697), (36, 547798), (72, 273899)]