21281824

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1$

素因数の和:146

約数の個数: 96

約数和(自身を含む): 48988800

約数和(自身を除く): 27706976

約数列:

[1, 2, 4, 8, 16, 17, 19, 29, 32, 34, 38, 58, 68, 71, 76, 116, 136, 142, 152, 232, 272, 284, 304, 323, 464, 493, 544, 551, 568, 608, 646, 928, 986, 1102, 1136, 1207, 1292, 1349, 1972, 2059, 2204, 2272, 2414, 2584, 2698, 3944, 4118, 4408, 4828, 5168, 5396, 7888, 8236, 8816, 9367, 9656, 10336, 10792, 15776, 16472, 17632, 18734, 19312, 21584, 22933, 32944, 35003, 37468, 38624, 39121, 43168, 45866, 65888, 70006, 74936, 78242, 91732, 140012, 149872, 156484, 183464, 280024, 299744, 312968, 366928, 560048, 625936, 665057, 733856, 1120096, 1251872, 1330114, 2660228, 5320456, 10640912, 21281824]

約数ペア:

[(1, 21281824), (2, 10640912), (4, 5320456), (8, 2660228), (16, 1330114), (17, 1251872), (19, 1120096), (29, 733856), (32, 665057), (34, 625936), (38, 560048), (58, 366928), (68, 312968), (71, 299744), (76, 280024), (116, 183464), (136, 156484), (142, 149872), (152, 140012), (232, 91732), (272, 78242), (284, 74936), (304, 70006), (323, 65888), (464, 45866), (493, 43168), (544, 39121), (551, 38624), (568, 37468), (608, 35003), (646, 32944), (928, 22933), (986, 21584), (1102, 19312), (1136, 18734), (1207, 17632), (1292, 16472), (1349, 15776), (1972, 10792), (2059, 10336), (2204, 9656), (2272, 9367), (2414, 8816), (2584, 8236), (2698, 7888), (3944, 5396), (4118, 5168), (4408, 4828)]