21605368

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{158863}}^1$

素因数の和:158886

約数の個数: 16

約数和(自身を含む): 42893280

約数和(自身を除く): 21287912

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 158863, 317726, 635452, 1270904, 2700671, 5401342, 10802684, 21605368]

約数ペア:

[(1, 21605368), (2, 10802684), (4, 5401342), (8, 2700671), (17, 1270904), (34, 635452), (68, 317726), (136, 158863)]