21539994

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1\times {\mathrm{167}}^1$

素因数の和:299

約数の個数: 64

約数和(自身を含む): 51480576

約数和(自身を除く): 29940582

約数列:

[1, 2, 3, 6, 7, 14, 21, 37, 42, 74, 83, 111, 166, 167, 222, 249, 259, 334, 498, 501, 518, 581, 777, 1002, 1162, 1169, 1554, 1743, 2338, 3071, 3486, 3507, 6142, 6179, 7014, 9213, 12358, 13861, 18426, 18537, 21497, 27722, 37074, 41583, 42994, 43253, 64491, 83166, 86506, 97027, 128982, 129759, 194054, 259518, 291081, 512857, 582162, 1025714, 1538571, 3077142, 3589999, 7179998, 10769997, 21539994]

約数ペア:

[(1, 21539994), (2, 10769997), (3, 7179998), (6, 3589999), (7, 3077142), (14, 1538571), (21, 1025714), (37, 582162), (42, 512857), (74, 291081), (83, 259518), (111, 194054), (166, 129759), (167, 128982), (222, 97027), (249, 86506), (259, 83166), (334, 64491), (498, 43253), (501, 42994), (518, 41583), (581, 37074), (777, 27722), (1002, 21497), (1162, 18537), (1169, 18426), (1554, 13861), (1743, 12358), (2338, 9213), (3071, 7014), (3486, 6179), (3507, 6142)]