19945437

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{157}}^1$

素因数の和:277

約数の個数: 32

約数和(自身を含む): 29486592

約数和(自身を除く): 9541155

約数列:

[1, 3, 17, 47, 51, 53, 141, 157, 159, 471, 799, 901, 2397, 2491, 2669, 2703, 7379, 7473, 8007, 8321, 22137, 24963, 42347, 125443, 127041, 141457, 376329, 391087, 424371, 1173261, 6648479, 19945437]

約数ペア:

[(1, 19945437), (3, 6648479), (17, 1173261), (47, 424371), (51, 391087), (53, 376329), (141, 141457), (157, 127041), (159, 125443), (471, 42347), (799, 24963), (901, 22137), (2397, 8321), (2491, 8007), (2669, 7473), (2703, 7379)]