20709273

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{233}}^1$

素因数の和:345

約数の個数: 32

約数和(自身を含む): 31135104

約数和(自身を除く): 10425831

約数列:

[1, 3, 13, 39, 43, 53, 129, 159, 233, 559, 689, 699, 1677, 2067, 2279, 3029, 6837, 9087, 10019, 12349, 29627, 30057, 37047, 88881, 130247, 160537, 390741, 481611, 531007, 1593021, 6903091, 20709273]

約数ペア:

[(1, 20709273), (3, 6903091), (13, 1593021), (39, 531007), (43, 481611), (53, 390741), (129, 160537), (159, 130247), (233, 88881), (559, 37047), (689, 30057), (699, 29627), (1677, 12349), (2067, 10019), (2279, 9087), (3029, 6837)]