21973265

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^2\times {\mathrm{269}}^1$

素因数の和:353

約数の個数: 24

約数和(自身を含む): 28955880

約数和(自身を除く): 6982615

約数列:

[1, 5, 17, 31, 85, 155, 269, 527, 961, 1345, 2635, 4573, 4805, 8339, 16337, 22865, 41695, 81685, 141763, 258509, 708815, 1292545, 4394653, 21973265]

約数ペア:

[(1, 21973265), (5, 4394653), (17, 1292545), (31, 708815), (85, 258509), (155, 141763), (269, 81685), (527, 41695), (961, 22865), (1345, 16337), (2635, 8339), (4573, 4805)]