20813925

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{25229}}^1$

素因数の和:25253

約数の個数: 24

約数和(自身を含む): 37542240

約数和(自身を除く): 16728315

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 165, 275, 825, 25229, 75687, 126145, 277519, 378435, 630725, 832557, 1387595, 1892175, 4162785, 6937975, 20813925]

約数ペア:

[(1, 20813925), (3, 6937975), (5, 4162785), (11, 1892175), (15, 1387595), (25, 832557), (33, 630725), (55, 378435), (75, 277519), (165, 126145), (275, 75687), (825, 25229)]