28543775

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{1237}}^1$

素因数の和:1331

約数の個数: 24

約数和(自身を含む): 38685024

約数和(自身を除く): 10141249

約数列:

[1, 5, 13, 25, 65, 71, 325, 355, 923, 1237, 1775, 4615, 6185, 16081, 23075, 30925, 80405, 87827, 402025, 439135, 1141751, 2195675, 5708755, 28543775]

約数ペア:

[(1, 28543775), (5, 5708755), (13, 2195675), (25, 1141751), (65, 439135), (71, 402025), (325, 87827), (355, 80405), (923, 30925), (1237, 23075), (1775, 16081), (4615, 6185)]