20390072

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{313}}^1\times {\mathrm{479}}^1$

素因数の和:815

約数の個数: 32

約数和(自身を含む): 40694400

約数和(自身を除く): 20304328

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 313, 479, 626, 958, 1252, 1916, 2504, 3832, 5321, 8143, 10642, 16286, 21284, 32572, 42568, 65144, 149927, 299854, 599708, 1199416, 2548759, 5097518, 10195036, 20390072]

約数ペア:

[(1, 20390072), (2, 10195036), (4, 5097518), (8, 2548759), (17, 1199416), (34, 599708), (68, 299854), (136, 149927), (313, 65144), (479, 42568), (626, 32572), (958, 21284), (1252, 16286), (1916, 10642), (2504, 8143), (3832, 5321)]