21990078

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{139}}^1$

素因数の和:222

約数の個数: 96

約数和(自身を含む): 56609280

約数和(自身を除く): 34619202

約数列:

[1, 2, 3, 6, 9, 11, 17, 18, 22, 33, 34, 47, 51, 66, 94, 99, 102, 139, 141, 153, 187, 198, 278, 282, 306, 374, 417, 423, 517, 561, 799, 834, 846, 1034, 1122, 1251, 1529, 1551, 1598, 1683, 2363, 2397, 2502, 3058, 3102, 3366, 4587, 4653, 4726, 4794, 6533, 7089, 7191, 8789, 9174, 9306, 13066, 13761, 14178, 14382, 17578, 19599, 21267, 25993, 26367, 27522, 39198, 42534, 51986, 52734, 58797, 71863, 77979, 79101, 111061, 117594, 143726, 155958, 158202, 215589, 222122, 233937, 333183, 431178, 467874, 646767, 666366, 999549, 1221671, 1293534, 1999098, 2443342, 3665013, 7330026, 10995039, 21990078]

約数ペア:

[(1, 21990078), (2, 10995039), (3, 7330026), (6, 3665013), (9, 2443342), (11, 1999098), (17, 1293534), (18, 1221671), (22, 999549), (33, 666366), (34, 646767), (47, 467874), (51, 431178), (66, 333183), (94, 233937), (99, 222122), (102, 215589), (139, 158202), (141, 155958), (153, 143726), (187, 117594), (198, 111061), (278, 79101), (282, 77979), (306, 71863), (374, 58797), (417, 52734), (423, 51986), (517, 42534), (561, 39198), (799, 27522), (834, 26367), (846, 25993), (1034, 21267), (1122, 19599), (1251, 17578), (1529, 14382), (1551, 14178), (1598, 13761), (1683, 13066), (2363, 9306), (2397, 9174), (2502, 8789), (3058, 7191), (3102, 7089), (3366, 6533), (4587, 4794), (4653, 4726)]