21397135

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{13249}}^1$

素因数の和:13290

約数の個数: 16

約数和(自身を含む): 28620000

約数和(自身を除く): 7222865

約数列:

[1, 5, 17, 19, 85, 95, 323, 1615, 13249, 66245, 225233, 251731, 1126165, 1258655, 4279427, 21397135]

約数ペア:

[(1, 21397135), (5, 4279427), (17, 1258655), (19, 1126165), (85, 251731), (95, 225233), (323, 66245), (1615, 13249)]