20339725

素因数分解:

$5^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1637}}^1$

素因数の和:1725

約数の個数: 24

約数和(自身を含む): 29248128

約数和(自身を除く): 8908403

約数列:

[1, 5, 7, 25, 35, 71, 175, 355, 497, 1637, 1775, 2485, 8185, 11459, 12425, 40925, 57295, 116227, 286475, 581135, 813589, 2905675, 4067945, 20339725]

約数ペア:

[(1, 20339725), (5, 4067945), (7, 2905675), (25, 813589), (35, 581135), (71, 286475), (175, 116227), (355, 57295), (497, 40925), (1637, 12425), (1775, 11459), (2485, 8185)]