21494936

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{2591}}^1$

素因数の和:2675

約数の個数: 32

約数和(自身を含む): 43390080

約数和(自身を除く): 21895144

約数列:

[1, 2, 4, 8, 17, 34, 61, 68, 122, 136, 244, 488, 1037, 2074, 2591, 4148, 5182, 8296, 10364, 20728, 44047, 88094, 158051, 176188, 316102, 352376, 632204, 1264408, 2686867, 5373734, 10747468, 21494936]

約数ペア:

[(1, 21494936), (2, 10747468), (4, 5373734), (8, 2686867), (17, 1264408), (34, 632204), (61, 352376), (68, 316102), (122, 176188), (136, 158051), (244, 88094), (488, 44047), (1037, 20728), (2074, 10364), (2591, 8296), (4148, 5182)]