20123986192

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{421639}}^1$

素因数の和:421823

約数の個数: 40

約数和(自身を含む): 41303854400

約数和(自身を除く): 21179868208

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 157, 304, 314, 628, 1256, 2512, 2983, 5966, 11932, 23864, 47728, 421639, 843278, 1686556, 3373112, 6746224, 8011141, 16022282, 32044564, 64089128, 66197323, 128178256, 132394646, 264789292, 529578584, 1059157168, 1257749137, 2515498274, 5030996548, 10061993096, 20123986192]

約数ペア:

[(1, 20123986192), (2, 10061993096), (4, 5030996548), (8, 2515498274), (16, 1257749137), (19, 1059157168), (38, 529578584), (76, 264789292), (152, 132394646), (157, 128178256), (304, 66197323), (314, 64089128), (628, 32044564), (1256, 16022282), (2512, 8011141), (2983, 6746224), (5966, 3373112), (11932, 1686556), (23864, 843278), (47728, 421639)]