20971706

素因数分解:

$2^1\times 7^3\times {\mathrm{19}}^1\times {\mathrm{1609}}^1$

素因数の和:1651

約数の個数: 32

約数和(自身を含む): 38640000

約数和(自身を除く): 17668294

約数列:

[1, 2, 7, 14, 19, 38, 49, 98, 133, 266, 343, 686, 931, 1609, 1862, 3218, 6517, 11263, 13034, 22526, 30571, 61142, 78841, 157682, 213997, 427994, 551887, 1103774, 1497979, 2995958, 10485853, 20971706]

約数ペア:

[(1, 20971706), (2, 10485853), (7, 2995958), (14, 1497979), (19, 1103774), (38, 551887), (49, 427994), (98, 213997), (133, 157682), (266, 78841), (343, 61142), (686, 30571), (931, 22526), (1609, 13034), (1862, 11263), (3218, 6517)]