21086128

素因数分解:

$2^4\times 7^1\times {\mathrm{59}}^1\times {\mathrm{3191}}^1$

素因数の和:3265

約数の個数: 40

約数和(自身を含む): 47496960

約数和(自身を除く): 26410832

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 59, 112, 118, 236, 413, 472, 826, 944, 1652, 3191, 3304, 6382, 6608, 12764, 22337, 25528, 44674, 51056, 89348, 178696, 188269, 357392, 376538, 753076, 1317883, 1506152, 2635766, 3012304, 5271532, 10543064, 21086128]

約数ペア:

[(1, 21086128), (2, 10543064), (4, 5271532), (7, 3012304), (8, 2635766), (14, 1506152), (16, 1317883), (28, 753076), (56, 376538), (59, 357392), (112, 188269), (118, 178696), (236, 89348), (413, 51056), (472, 44674), (826, 25528), (944, 22337), (1652, 12764), (3191, 6608), (3304, 6382)]