21391524

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{7717}}^1$

素因数の和:7745

約数の個数: 72

約数和(自身を含む): 67424448

約数和(自身を除く): 46032924

約数列:

[1, 2, 3, 4, 6, 7, 9, 11, 12, 14, 18, 21, 22, 28, 33, 36, 42, 44, 63, 66, 77, 84, 99, 126, 132, 154, 198, 231, 252, 308, 396, 462, 693, 924, 1386, 2772, 7717, 15434, 23151, 30868, 46302, 54019, 69453, 84887, 92604, 108038, 138906, 162057, 169774, 216076, 254661, 277812, 324114, 339548, 486171, 509322, 594209, 648228, 763983, 972342, 1018644, 1188418, 1527966, 1782627, 1944684, 2376836, 3055932, 3565254, 5347881, 7130508, 10695762, 21391524]

約数ペア:

[(1, 21391524), (2, 10695762), (3, 7130508), (4, 5347881), (6, 3565254), (7, 3055932), (9, 2376836), (11, 1944684), (12, 1782627), (14, 1527966), (18, 1188418), (21, 1018644), (22, 972342), (28, 763983), (33, 648228), (36, 594209), (42, 509322), (44, 486171), (63, 339548), (66, 324114), (77, 277812), (84, 254661), (99, 216076), (126, 169774), (132, 162057), (154, 138906), (198, 108038), (231, 92604), (252, 84887), (308, 69453), (396, 54019), (462, 46302), (693, 30868), (924, 23151), (1386, 15434), (2772, 7717)]