20442513

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{727}}^1$

素因数の和:853

約数の個数: 32

約数和(自身を含む): 33918976

約数和(自身を除く): 13476463

約数列:

[1, 3, 7, 13, 21, 39, 91, 103, 273, 309, 721, 727, 1339, 2163, 2181, 4017, 5089, 9373, 9451, 15267, 28119, 28353, 66157, 74881, 198471, 224643, 524167, 973453, 1572501, 2920359, 6814171, 20442513]

約数ペア:

[(1, 20442513), (3, 6814171), (7, 2920359), (13, 1572501), (21, 973453), (39, 524167), (91, 224643), (103, 198471), (273, 74881), (309, 66157), (721, 28353), (727, 28119), (1339, 15267), (2163, 9451), (2181, 9373), (4017, 5089)]