21982904

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{161639}}^1$

素因数の和:161662

約数の個数: 16

約数和(自身を含む): 43642800

約数和(自身を除く): 21659896

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 161639, 323278, 646556, 1293112, 2747863, 5495726, 10991452, 21982904]

約数ペア:

[(1, 21982904), (2, 10991452), (4, 5495726), (8, 2747863), (17, 1293112), (34, 646556), (68, 323278), (136, 161639)]