28753120

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^2$

素因数の和:105

約数の個数: 144

約数和(自身を含む): 81076464

約数和(自身を除く): 52323344

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 17, 20, 22, 31, 32, 34, 40, 44, 55, 62, 68, 80, 85, 88, 110, 124, 136, 155, 160, 170, 176, 187, 220, 248, 272, 310, 340, 341, 352, 374, 440, 496, 527, 544, 620, 680, 682, 748, 880, 935, 961, 992, 1054, 1240, 1360, 1364, 1496, 1705, 1760, 1870, 1922, 2108, 2480, 2635, 2720, 2728, 2992, 3410, 3740, 3844, 4216, 4805, 4960, 5270, 5456, 5797, 5984, 6820, 7480, 7688, 8432, 9610, 10540, 10571, 10912, 11594, 13640, 14960, 15376, 16337, 16864, 19220, 21080, 21142, 23188, 27280, 28985, 29920, 30752, 32674, 38440, 42160, 42284, 46376, 52855, 54560, 57970, 65348, 76880, 81685, 84320, 84568, 92752, 105710, 115940, 130696, 153760, 163370, 169136, 179707, 185504, 211420, 231880, 261392, 326740, 338272, 359414, 422840, 463760, 522784, 653480, 718828, 845680, 898535, 927520, 1306960, 1437656, 1691360, 1797070, 2613920, 2875312, 3594140, 5750624, 7188280, 14376560, 28753120]

約数ペア:

[(1, 28753120), (2, 14376560), (4, 7188280), (5, 5750624), (8, 3594140), (10, 2875312), (11, 2613920), (16, 1797070), (17, 1691360), (20, 1437656), (22, 1306960), (31, 927520), (32, 898535), (34, 845680), (40, 718828), (44, 653480), (55, 522784), (62, 463760), (68, 422840), (80, 359414), (85, 338272), (88, 326740), (110, 261392), (124, 231880), (136, 211420), (155, 185504), (160, 179707), (170, 169136), (176, 163370), (187, 153760), (220, 130696), (248, 115940), (272, 105710), (310, 92752), (340, 84568), (341, 84320), (352, 81685), (374, 76880), (440, 65348), (496, 57970), (527, 54560), (544, 52855), (620, 46376), (680, 42284), (682, 42160), (748, 38440), (880, 32674), (935, 30752), (961, 29920), (992, 28985), (1054, 27280), (1240, 23188), (1360, 21142), (1364, 21080), (1496, 19220), (1705, 16864), (1760, 16337), (1870, 15376), (1922, 14960), (2108, 13640), (2480, 11594), (2635, 10912), (2720, 10571), (2728, 10540), (2992, 9610), (3410, 8432), (3740, 7688), (3844, 7480), (4216, 6820), (4805, 5984), (4960, 5797), (5270, 5456)]