19991286

素因数分解:

$2^1\times 3^4\times 7^1\times {\mathrm{17}}^2\times {\mathrm{61}}^1$

素因数の和:116

約数の個数: 120

約数和(自身を含む): 55274736

約数和(自身を除く): 35283450

約数列:

[1, 2, 3, 6, 7, 9, 14, 17, 18, 21, 27, 34, 42, 51, 54, 61, 63, 81, 102, 119, 122, 126, 153, 162, 183, 189, 238, 289, 306, 357, 366, 378, 427, 459, 549, 567, 578, 714, 854, 867, 918, 1037, 1071, 1098, 1134, 1281, 1377, 1647, 1734, 2023, 2074, 2142, 2562, 2601, 2754, 3111, 3213, 3294, 3843, 4046, 4941, 5202, 6069, 6222, 6426, 7259, 7686, 7803, 9333, 9639, 9882, 11529, 12138, 14518, 15606, 17629, 18207, 18666, 19278, 21777, 23058, 23409, 27999, 34587, 35258, 36414, 43554, 46818, 52887, 54621, 55998, 65331, 69174, 83997, 105774, 109242, 123403, 130662, 158661, 163863, 167994, 195993, 246806, 317322, 327726, 370209, 391986, 475983, 587979, 740418, 951966, 1110627, 1175958, 1427949, 2221254, 2855898, 3331881, 6663762, 9995643, 19991286]

約数ペア:

[(1, 19991286), (2, 9995643), (3, 6663762), (6, 3331881), (7, 2855898), (9, 2221254), (14, 1427949), (17, 1175958), (18, 1110627), (21, 951966), (27, 740418), (34, 587979), (42, 475983), (51, 391986), (54, 370209), (61, 327726), (63, 317322), (81, 246806), (102, 195993), (119, 167994), (122, 163863), (126, 158661), (153, 130662), (162, 123403), (183, 109242), (189, 105774), (238, 83997), (289, 69174), (306, 65331), (357, 55998), (366, 54621), (378, 52887), (427, 46818), (459, 43554), (549, 36414), (567, 35258), (578, 34587), (714, 27999), (854, 23409), (867, 23058), (918, 21777), (1037, 19278), (1071, 18666), (1098, 18207), (1134, 17629), (1281, 15606), (1377, 14518), (1647, 12138), (1734, 11529), (2023, 9882), (2074, 9639), (2142, 9333), (2562, 7803), (2601, 7686), (2754, 7259), (3111, 6426), (3213, 6222), (3294, 6069), (3843, 5202), (4046, 4941)]