681498378

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^2\times {\mathrm{157}}^1\times {\mathrm{1993}}^1$

素因数の和:2180

約数の個数: 72

約数和(自身を含む): 1634174724

約数和(自身を除く): 952676346

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 33, 66, 99, 121, 157, 198, 242, 314, 363, 471, 726, 942, 1089, 1413, 1727, 1993, 2178, 2826, 3454, 3986, 5181, 5979, 10362, 11958, 15543, 17937, 18997, 21923, 31086, 35874, 37994, 43846, 56991, 65769, 113982, 131538, 170973, 197307, 241153, 312901, 341946, 394614, 482306, 625802, 723459, 938703, 1446918, 1877406, 2170377, 2816109, 3441911, 4340754, 5632218, 6883822, 10325733, 20651466, 30977199, 37861021, 61954398, 75722042, 113583063, 227166126, 340749189, 681498378]

約数ペア:

[(1, 681498378), (2, 340749189), (3, 227166126), (6, 113583063), (9, 75722042), (11, 61954398), (18, 37861021), (22, 30977199), (33, 20651466), (66, 10325733), (99, 6883822), (121, 5632218), (157, 4340754), (198, 3441911), (242, 2816109), (314, 2170377), (363, 1877406), (471, 1446918), (726, 938703), (942, 723459), (1089, 625802), (1413, 482306), (1727, 394614), (1993, 341946), (2178, 312901), (2826, 241153), (3454, 197307), (3986, 170973), (5181, 131538), (5979, 113982), (10362, 65769), (11958, 56991), (15543, 43846), (17937, 37994), (18997, 35874), (21923, 31086)]