19987002

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:113

約数の個数: 144

約数和(自身を含む): 56339712

約数和(自身を除く): 36352710

約数列:

[1, 2, 3, 6, 7, 9, 14, 17, 18, 21, 31, 34, 42, 43, 49, 51, 62, 63, 86, 93, 98, 102, 119, 126, 129, 147, 153, 186, 217, 238, 258, 279, 294, 301, 306, 357, 387, 434, 441, 527, 558, 602, 651, 714, 731, 774, 833, 882, 903, 1054, 1071, 1302, 1333, 1462, 1519, 1581, 1666, 1806, 1953, 2107, 2142, 2193, 2499, 2666, 2709, 3038, 3162, 3689, 3906, 3999, 4214, 4386, 4557, 4743, 4998, 5117, 5418, 6321, 6579, 7378, 7497, 7998, 9114, 9331, 9486, 10234, 11067, 11997, 12642, 13158, 13671, 14994, 15351, 18662, 18963, 22134, 22661, 23994, 25823, 27342, 27993, 30702, 33201, 35819, 37926, 45322, 46053, 51646, 55986, 65317, 66402, 67983, 71638, 77469, 83979, 92106, 107457, 130634, 135966, 154938, 158627, 167958, 195951, 203949, 214914, 232407, 317254, 322371, 391902, 407898, 464814, 475881, 587853, 644742, 951762, 1110389, 1175706, 1427643, 2220778, 2855286, 3331167, 6662334, 9993501, 19987002]

約数ペア:

[(1, 19987002), (2, 9993501), (3, 6662334), (6, 3331167), (7, 2855286), (9, 2220778), (14, 1427643), (17, 1175706), (18, 1110389), (21, 951762), (31, 644742), (34, 587853), (42, 475881), (43, 464814), (49, 407898), (51, 391902), (62, 322371), (63, 317254), (86, 232407), (93, 214914), (98, 203949), (102, 195951), (119, 167958), (126, 158627), (129, 154938), (147, 135966), (153, 130634), (186, 107457), (217, 92106), (238, 83979), (258, 77469), (279, 71638), (294, 67983), (301, 66402), (306, 65317), (357, 55986), (387, 51646), (434, 46053), (441, 45322), (527, 37926), (558, 35819), (602, 33201), (651, 30702), (714, 27993), (731, 27342), (774, 25823), (833, 23994), (882, 22661), (903, 22134), (1054, 18963), (1071, 18662), (1302, 15351), (1333, 14994), (1462, 13671), (1519, 13158), (1581, 12642), (1666, 11997), (1806, 11067), (1953, 10234), (2107, 9486), (2142, 9331), (2193, 9114), (2499, 7998), (2666, 7497), (2709, 7378), (3038, 6579), (3162, 6321), (3689, 5418), (3906, 5117), (3999, 4998), (4214, 4743), (4386, 4557)]