21000772804

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{252401}}^1$

素因数の和:252508

約数の個数: 48

約数和(自身を含む): 42064307712

約数和(自身を除く): 21063534908

約数列:

[1, 2, 4, 11, 22, 31, 44, 61, 62, 122, 124, 244, 341, 671, 682, 1342, 1364, 1891, 2684, 3782, 7564, 20801, 41602, 83204, 252401, 504802, 1009604, 2776411, 5552822, 7824431, 11105644, 15396461, 15648862, 30792922, 31297724, 61585844, 86068741, 169361071, 172137482, 338722142, 344274964, 477290291, 677444284, 954580582, 1909161164, 5250193201, 10500386402, 21000772804]

約数ペア:

[(1, 21000772804), (2, 10500386402), (4, 5250193201), (11, 1909161164), (22, 954580582), (31, 677444284), (44, 477290291), (61, 344274964), (62, 338722142), (122, 172137482), (124, 169361071), (244, 86068741), (341, 61585844), (671, 31297724), (682, 30792922), (1342, 15648862), (1364, 15396461), (1891, 11105644), (2684, 7824431), (3782, 5552822), (7564, 2776411), (20801, 1009604), (41602, 504802), (83204, 252401)]