20784433978

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{139}}^1\times {\mathrm{2351}}^1$

素因数の和:2576

約数の個数: 96

約数和(自身を含む): 40540953600

約数和(自身を除く): 19756519622

約数列:

[1, 2, 7, 11, 14, 22, 49, 59, 77, 98, 118, 139, 154, 278, 413, 539, 649, 826, 973, 1078, 1298, 1529, 1946, 2351, 2891, 3058, 4543, 4702, 5782, 6811, 8201, 9086, 10703, 13622, 16402, 16457, 21406, 25861, 31801, 32914, 51722, 57407, 63602, 74921, 90211, 114814, 115199, 138709, 149842, 180422, 181027, 230398, 277418, 326789, 362054, 401849, 631477, 653578, 803698, 970963, 1262954, 1267189, 1525799, 1941926, 2287523, 2534378, 3051598, 3594679, 4420339, 4575046, 6796741, 7189358, 8840678, 10680593, 13593482, 16012661, 19280551, 21361186, 25162753, 32025322, 38561102, 50325506, 74764151, 134963857, 149528302, 176139271, 212086061, 269927714, 352278542, 424172122, 944746999, 1484602427, 1889493998, 2969204854, 10392216989, 20784433978]

約数ペア:

[(1, 20784433978), (2, 10392216989), (7, 2969204854), (11, 1889493998), (14, 1484602427), (22, 944746999), (49, 424172122), (59, 352278542), (77, 269927714), (98, 212086061), (118, 176139271), (139, 149528302), (154, 134963857), (278, 74764151), (413, 50325506), (539, 38561102), (649, 32025322), (826, 25162753), (973, 21361186), (1078, 19280551), (1298, 16012661), (1529, 13593482), (1946, 10680593), (2351, 8840678), (2891, 7189358), (3058, 6796741), (4543, 4575046), (4702, 4420339), (5782, 3594679), (6811, 3051598), (8201, 2534378), (9086, 2287523), (10703, 1941926), (13622, 1525799), (16402, 1267189), (16457, 1262954), (21406, 970963), (25861, 803698), (31801, 653578), (32914, 631477), (51722, 401849), (57407, 362054), (63602, 326789), (74921, 277418), (90211, 230398), (114814, 181027), (115199, 180422), (138709, 149842)]