21395608

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{409}}^1\times {\mathrm{503}}^1$

素因数の和:931

約数の個数: 32

約数和(自身を含む): 43394400

約数和(自身を除く): 21998792

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 409, 503, 818, 1006, 1636, 2012, 3272, 4024, 5317, 6539, 10634, 13078, 21268, 26156, 42536, 52312, 205727, 411454, 822908, 1645816, 2674451, 5348902, 10697804, 21395608]

約数ペア:

[(1, 21395608), (2, 10697804), (4, 5348902), (8, 2674451), (13, 1645816), (26, 822908), (52, 411454), (104, 205727), (409, 52312), (503, 42536), (818, 26156), (1006, 21268), (1636, 13078), (2012, 10634), (3272, 6539), (4024, 5317)]