21638576

素因数分解:

$2^4\times {\mathrm{163}}^1\times {\mathrm{8297}}^1$

素因数の和:8468

約数の個数: 20

約数和(自身を含む): 42187032

約数和(自身を除く): 20548456

約数列:

[1, 2, 4, 8, 16, 163, 326, 652, 1304, 2608, 8297, 16594, 33188, 66376, 132752, 1352411, 2704822, 5409644, 10819288, 21638576]

約数ペア:

[(1, 21638576), (2, 10819288), (4, 5409644), (8, 2704822), (16, 1352411), (163, 132752), (326, 66376), (652, 33188), (1304, 16594), (2608, 8297)]