20872407

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{251}}^1\times {\mathrm{523}}^1$

素因数の和:830

約数の個数: 16

約数和(自身を含む): 28522368

約数和(自身を除く): 7649961

約数列:

[1, 3, 53, 159, 251, 523, 753, 1569, 13303, 27719, 39909, 83157, 131273, 393819, 6957469, 20872407]

約数ペア:

[(1, 20872407), (3, 6957469), (53, 393819), (159, 131273), (251, 83157), (523, 39909), (753, 27719), (1569, 13303)]