21180258

素因数分解:

$2^1\times 3^3\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{197}}^1$

素因数の和:400

約数の個数: 64

約数和(自身を含む): 51891840

約数和(自身を除く): 30711582

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 27, 33, 54, 66, 99, 181, 197, 198, 297, 362, 394, 543, 591, 594, 1086, 1182, 1629, 1773, 1991, 2167, 3258, 3546, 3982, 4334, 4887, 5319, 5973, 6501, 9774, 10638, 11946, 13002, 17919, 19503, 35657, 35838, 39006, 53757, 58509, 71314, 106971, 107514, 117018, 213942, 320913, 392227, 641826, 784454, 962739, 1176681, 1925478, 2353362, 3530043, 7060086, 10590129, 21180258]

約数ペア:

[(1, 21180258), (2, 10590129), (3, 7060086), (6, 3530043), (9, 2353362), (11, 1925478), (18, 1176681), (22, 962739), (27, 784454), (33, 641826), (54, 392227), (66, 320913), (99, 213942), (181, 117018), (197, 107514), (198, 106971), (297, 71314), (362, 58509), (394, 53757), (543, 39006), (591, 35838), (594, 35657), (1086, 19503), (1182, 17919), (1629, 13002), (1773, 11946), (1991, 10638), (2167, 9774), (3258, 6501), (3546, 5973), (3982, 5319), (4334, 4887)]