21213654

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1$

素因数の和:150

約数の個数: 128

約数和(自身を含む): 58309632

約数和(自身を除く): 37095978

約数列:

[1, 2, 3, 6, 7, 11, 14, 17, 21, 22, 33, 34, 37, 42, 51, 66, 73, 74, 77, 102, 111, 119, 146, 154, 187, 219, 222, 231, 238, 259, 357, 374, 407, 438, 462, 511, 518, 561, 629, 714, 777, 803, 814, 1022, 1122, 1221, 1241, 1258, 1309, 1533, 1554, 1606, 1887, 2409, 2442, 2482, 2618, 2701, 2849, 3066, 3723, 3774, 3927, 4403, 4818, 5402, 5621, 5698, 6919, 7446, 7854, 8103, 8547, 8687, 8806, 11242, 13209, 13651, 13838, 16206, 16863, 17094, 17374, 18907, 20757, 26061, 26418, 27302, 29711, 33726, 37814, 40953, 41514, 45917, 48433, 52122, 56721, 59422, 81906, 89133, 91834, 95557, 96866, 113442, 137751, 145299, 178266, 191114, 207977, 275502, 286671, 290598, 321419, 415954, 505087, 573342, 623931, 642838, 964257, 1010174, 1247862, 1515261, 1928514, 3030522, 3535609, 7071218, 10606827, 21213654]

約数ペア:

[(1, 21213654), (2, 10606827), (3, 7071218), (6, 3535609), (7, 3030522), (11, 1928514), (14, 1515261), (17, 1247862), (21, 1010174), (22, 964257), (33, 642838), (34, 623931), (37, 573342), (42, 505087), (51, 415954), (66, 321419), (73, 290598), (74, 286671), (77, 275502), (102, 207977), (111, 191114), (119, 178266), (146, 145299), (154, 137751), (187, 113442), (219, 96866), (222, 95557), (231, 91834), (238, 89133), (259, 81906), (357, 59422), (374, 56721), (407, 52122), (438, 48433), (462, 45917), (511, 41514), (518, 40953), (561, 37814), (629, 33726), (714, 29711), (777, 27302), (803, 26418), (814, 26061), (1022, 20757), (1122, 18907), (1221, 17374), (1241, 17094), (1258, 16863), (1309, 16206), (1533, 13838), (1554, 13651), (1606, 13209), (1887, 11242), (2409, 8806), (2442, 8687), (2482, 8547), (2618, 8103), (2701, 7854), (2849, 7446), (3066, 6919), (3723, 5698), (3774, 5621), (3927, 5402), (4403, 4818)]