20257664

素因数分解:

$2^7\times 7^1\times {\mathrm{23}}^1\times {\mathrm{983}}^1$

素因数の和:1027

約数の個数: 64

約数和(自身を含む): 48176640

約数和(自身を除く): 27918976

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 32, 46, 56, 64, 92, 112, 128, 161, 184, 224, 322, 368, 448, 644, 736, 896, 983, 1288, 1472, 1966, 2576, 2944, 3932, 5152, 6881, 7864, 10304, 13762, 15728, 20608, 22609, 27524, 31456, 45218, 55048, 62912, 90436, 110096, 125824, 158263, 180872, 220192, 316526, 361744, 440384, 633052, 723488, 880768, 1266104, 1446976, 2532208, 2893952, 5064416, 10128832, 20257664]

約数ペア:

[(1, 20257664), (2, 10128832), (4, 5064416), (7, 2893952), (8, 2532208), (14, 1446976), (16, 1266104), (23, 880768), (28, 723488), (32, 633052), (46, 440384), (56, 361744), (64, 316526), (92, 220192), (112, 180872), (128, 158263), (161, 125824), (184, 110096), (224, 90436), (322, 62912), (368, 55048), (448, 45218), (644, 31456), (736, 27524), (896, 22609), (983, 20608), (1288, 15728), (1472, 13762), (1966, 10304), (2576, 7864), (2944, 6881), (3932, 5152)]