19728993

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{2953}}^1$

素因数の和:3104

約数の個数: 16

約数和(自身を含む): 28074816

約数和(自身を除く): 8345823

約数列:

[1, 3, 17, 51, 131, 393, 2227, 2953, 6681, 8859, 50201, 150603, 386843, 1160529, 6576331, 19728993]

約数ペア:

[(1, 19728993), (3, 6576331), (17, 1160529), (51, 386843), (131, 150603), (393, 50201), (2227, 8859), (2953, 6681)]