21188392

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{155797}}^1$

素因数の和:155820

約数の個数: 16

約数和(自身を含む): 42065460

約数和(自身を除く): 20877068

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 155797, 311594, 623188, 1246376, 2648549, 5297098, 10594196, 21188392]

約数ペア:

[(1, 21188392), (2, 10594196), (4, 5297098), (8, 2648549), (17, 1246376), (34, 623188), (68, 311594), (136, 155797)]