20804557648

素因数分解:

$2^4\times 7^1\times {\mathrm{18637}}^1\times {\mathrm{9967}}^1$

素因数の和:28619

約数の個数: 40

約数和(自身を含む): 46074328832

約数和(自身を除く): 25269771184

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 9967, 18637, 19934, 37274, 39868, 69769, 74548, 79736, 130459, 139538, 149096, 159472, 260918, 279076, 298192, 521836, 558152, 1043672, 1116304, 2087344, 185754979, 371509958, 743019916, 1300284853, 1486039832, 2600569706, 2972079664, 5201139412, 10402278824, 20804557648]

約数ペア:

[(1, 20804557648), (2, 10402278824), (4, 5201139412), (7, 2972079664), (8, 2600569706), (14, 1486039832), (16, 1300284853), (28, 743019916), (56, 371509958), (112, 185754979), (9967, 2087344), (18637, 1116304), (19934, 1043672), (37274, 558152), (39868, 521836), (69769, 298192), (74548, 279076), (79736, 260918), (130459, 159472), (139538, 149096)]