19990772

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{197}}^1\times {\mathrm{1103}}^1$

素因数の和:1327

約数の個数: 24

約数和(自身を含む): 36723456

約数和(自身を除く): 16732684

約数列:

[1, 2, 4, 23, 46, 92, 197, 394, 788, 1103, 2206, 4412, 4531, 9062, 18124, 25369, 50738, 101476, 217291, 434582, 869164, 4997693, 9995386, 19990772]

約数ペア:

[(1, 19990772), (2, 9995386), (4, 4997693), (23, 869164), (46, 434582), (92, 217291), (197, 101476), (394, 50738), (788, 25369), (1103, 18124), (2206, 9062), (4412, 4531)]