20512187773

素因数分解:

$7^2\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{349}}^1\times {\mathrm{431}}^1$

素因数の和:839

約数の個数: 72

約数和(自身を含む): 27509932800

約数和(自身を除く): 6997745027

約数列:

[1, 7, 11, 23, 49, 77, 121, 161, 253, 349, 431, 539, 847, 1127, 1771, 2443, 2783, 3017, 3839, 4741, 5929, 8027, 9913, 12397, 17101, 19481, 21119, 26873, 33187, 42229, 52151, 56189, 69391, 88297, 109043, 136367, 150419, 188111, 232309, 295603, 365057, 393323, 485737, 618079, 763301, 971267, 1052933, 1199473, 1654609, 2069221, 2555399, 3459637, 4326553, 5343107, 6798869, 7370531, 8396311, 11582263, 18200699, 24217459, 38056007, 47592083, 58774177, 81075841, 127404893, 169522213, 266392049, 418616077, 891834251, 1864744343, 2930312539, 20512187773]

約数ペア:

[(1, 20512187773), (7, 2930312539), (11, 1864744343), (23, 891834251), (49, 418616077), (77, 266392049), (121, 169522213), (161, 127404893), (253, 81075841), (349, 58774177), (431, 47592083), (539, 38056007), (847, 24217459), (1127, 18200699), (1771, 11582263), (2443, 8396311), (2783, 7370531), (3017, 6798869), (3839, 5343107), (4741, 4326553), (5929, 3459637), (8027, 2555399), (9913, 2069221), (12397, 1654609), (17101, 1199473), (19481, 1052933), (21119, 971267), (26873, 763301), (33187, 618079), (42229, 485737), (52151, 393323), (56189, 365057), (69391, 295603), (88297, 232309), (109043, 188111), (136367, 150419)]