21751216

素因数分解:

$2^4\times {\mathrm{137}}^1\times {\mathrm{9923}}^1$

素因数の和:10068

約数の個数: 20

約数和(自身を含む): 42454872

約数和(自身を除く): 20703656

約数列:

[1, 2, 4, 8, 16, 137, 274, 548, 1096, 2192, 9923, 19846, 39692, 79384, 158768, 1359451, 2718902, 5437804, 10875608, 21751216]

約数ペア:

[(1, 21751216), (2, 10875608), (4, 5437804), (8, 2718902), (16, 1359451), (137, 158768), (274, 79384), (548, 39692), (1096, 19846), (2192, 9923)]