20958476

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{9721}}^1$

素因数の和:9750

約数の個数: 36

約数和(自身を含む): 46548936

約数和(自身を除く): 25590460

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 49, 77, 98, 154, 196, 308, 539, 1078, 2156, 9721, 19442, 38884, 68047, 106931, 136094, 213862, 272188, 427724, 476329, 748517, 952658, 1497034, 1905316, 2994068, 5239619, 10479238, 20958476]

約数ペア:

[(1, 20958476), (2, 10479238), (4, 5239619), (7, 2994068), (11, 1905316), (14, 1497034), (22, 952658), (28, 748517), (44, 476329), (49, 427724), (77, 272188), (98, 213862), (154, 136094), (196, 106931), (308, 68047), (539, 38884), (1078, 19442), (2156, 9721)]