21277776

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{61}}^1$

素因数の和:141

約数の個数: 120

約数和(自身を含む): 61903776

約数和(自身を除く): 40626000

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 43, 48, 52, 61, 78, 86, 104, 122, 129, 156, 169, 172, 183, 208, 244, 258, 312, 338, 344, 366, 488, 507, 516, 559, 624, 676, 688, 732, 793, 976, 1014, 1032, 1118, 1352, 1464, 1586, 1677, 2028, 2064, 2236, 2379, 2623, 2704, 2928, 3172, 3354, 4056, 4472, 4758, 5246, 6344, 6708, 7267, 7869, 8112, 8944, 9516, 10309, 10492, 12688, 13416, 14534, 15738, 19032, 20618, 20984, 21801, 26832, 29068, 30927, 31476, 34099, 38064, 41236, 41968, 43602, 58136, 61854, 62952, 68198, 82472, 87204, 102297, 116272, 123708, 125904, 136396, 164944, 174408, 204594, 247416, 272792, 348816, 409188, 443287, 494832, 545584, 818376, 886574, 1329861, 1636752, 1773148, 2659722, 3546296, 5319444, 7092592, 10638888, 21277776]

約数ペア:

[(1, 21277776), (2, 10638888), (3, 7092592), (4, 5319444), (6, 3546296), (8, 2659722), (12, 1773148), (13, 1636752), (16, 1329861), (24, 886574), (26, 818376), (39, 545584), (43, 494832), (48, 443287), (52, 409188), (61, 348816), (78, 272792), (86, 247416), (104, 204594), (122, 174408), (129, 164944), (156, 136396), (169, 125904), (172, 123708), (183, 116272), (208, 102297), (244, 87204), (258, 82472), (312, 68198), (338, 62952), (344, 61854), (366, 58136), (488, 43602), (507, 41968), (516, 41236), (559, 38064), (624, 34099), (676, 31476), (688, 30927), (732, 29068), (793, 26832), (976, 21801), (1014, 20984), (1032, 20618), (1118, 19032), (1352, 15738), (1464, 14534), (1586, 13416), (1677, 12688), (2028, 10492), (2064, 10309), (2236, 9516), (2379, 8944), (2623, 8112), (2704, 7869), (2928, 7267), (3172, 6708), (3354, 6344), (4056, 5246), (4472, 4758)]