21294064

素因数分解:

$2^4\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{647}}^1$

素因数の和:694

約数の個数: 60

約数和(自身を含む): 48090672

約数和(自身を除く): 26796608

約数列:

[1, 2, 4, 8, 11, 16, 17, 22, 34, 44, 68, 88, 121, 136, 176, 187, 242, 272, 374, 484, 647, 748, 968, 1294, 1496, 1936, 2057, 2588, 2992, 4114, 5176, 7117, 8228, 10352, 10999, 14234, 16456, 21998, 28468, 32912, 43996, 56936, 78287, 87992, 113872, 120989, 156574, 175984, 241978, 313148, 483956, 626296, 967912, 1252592, 1330879, 1935824, 2661758, 5323516, 10647032, 21294064]

約数ペア:

[(1, 21294064), (2, 10647032), (4, 5323516), (8, 2661758), (11, 1935824), (16, 1330879), (17, 1252592), (22, 967912), (34, 626296), (44, 483956), (68, 313148), (88, 241978), (121, 175984), (136, 156574), (176, 120989), (187, 113872), (242, 87992), (272, 78287), (374, 56936), (484, 43996), (647, 32912), (748, 28468), (968, 21998), (1294, 16456), (1496, 14234), (1936, 10999), (2057, 10352), (2588, 8228), (2992, 7117), (4114, 5176)]