21000768296

素因数分解:

$2^3\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{277}}^1\times {\mathrm{2351}}^1$

素因数の和:2802

約数の個数: 64

約数和(自身を含む): 41192928000

約数和(自身を除く): 20192159704

約数列:

[1, 2, 4, 8, 29, 58, 116, 139, 232, 277, 278, 554, 556, 1108, 1112, 2216, 2351, 4031, 4702, 8033, 8062, 9404, 16066, 16124, 18808, 32132, 32248, 38503, 64264, 68179, 77006, 136358, 154012, 272716, 308024, 326789, 545432, 651227, 653578, 1116587, 1302454, 1307156, 2233174, 2604908, 2614312, 4466348, 5209816, 8932696, 9476881, 18885583, 18953762, 37771166, 37907524, 75542332, 75815048, 90520553, 151084664, 181041106, 362082212, 724164424, 2625096037, 5250192074, 10500384148, 21000768296]

約数ペア:

[(1, 21000768296), (2, 10500384148), (4, 5250192074), (8, 2625096037), (29, 724164424), (58, 362082212), (116, 181041106), (139, 151084664), (232, 90520553), (277, 75815048), (278, 75542332), (554, 37907524), (556, 37771166), (1108, 18953762), (1112, 18885583), (2216, 9476881), (2351, 8932696), (4031, 5209816), (4702, 4466348), (8033, 2614312), (8062, 2604908), (9404, 2233174), (16066, 1307156), (16124, 1302454), (18808, 1116587), (32132, 653578), (32248, 651227), (38503, 545432), (64264, 326789), (68179, 308024), (77006, 272716), (136358, 154012)]