28145481

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{787}}^1$

素因数の和:941

約数の個数: 32

約数和(自身を含む): 46599168

約数和(自身を除く): 18453687

約数列:

[1, 3, 7, 13, 21, 39, 91, 131, 273, 393, 787, 917, 1703, 2361, 2751, 5109, 5509, 10231, 11921, 16527, 30693, 35763, 71617, 103097, 214851, 309291, 721679, 1340261, 2165037, 4020783, 9381827, 28145481]

約数ペア:

[(1, 28145481), (3, 9381827), (7, 4020783), (13, 2165037), (21, 1340261), (39, 721679), (91, 309291), (131, 214851), (273, 103097), (393, 71617), (787, 35763), (917, 30693), (1703, 16527), (2361, 11921), (2751, 10231), (5109, 5509)]