21555424

素因数分解:

$2^5\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{293}}^1$

素因数の和:344

約数の個数: 72

約数和(自身を含む): 49268520

約数和(自身を除く): 27713096

約数列:

[1, 2, 4, 8, 11, 16, 19, 22, 32, 38, 44, 76, 88, 121, 152, 176, 209, 242, 293, 304, 352, 418, 484, 586, 608, 836, 968, 1172, 1672, 1936, 2299, 2344, 3223, 3344, 3872, 4598, 4688, 5567, 6446, 6688, 9196, 9376, 11134, 12892, 18392, 22268, 25784, 35453, 36784, 44536, 51568, 61237, 70906, 73568, 89072, 103136, 122474, 141812, 178144, 244948, 283624, 489896, 567248, 673607, 979792, 1134496, 1347214, 1959584, 2694428, 5388856, 10777712, 21555424]

約数ペア:

[(1, 21555424), (2, 10777712), (4, 5388856), (8, 2694428), (11, 1959584), (16, 1347214), (19, 1134496), (22, 979792), (32, 673607), (38, 567248), (44, 489896), (76, 283624), (88, 244948), (121, 178144), (152, 141812), (176, 122474), (209, 103136), (242, 89072), (293, 73568), (304, 70906), (352, 61237), (418, 51568), (484, 44536), (586, 36784), (608, 35453), (836, 25784), (968, 22268), (1172, 18392), (1672, 12892), (1936, 11134), (2299, 9376), (2344, 9196), (3223, 6688), (3344, 6446), (3872, 5567), (4598, 4688)]