21256494

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{4253}}^1$

素因数の和:4289

約数の個数: 48

約数和(自身を含む): 52375248

約数和(自身を除く): 31118754

約数列:

[1, 2, 3, 6, 7, 14, 17, 21, 34, 42, 49, 51, 98, 102, 119, 147, 238, 294, 357, 714, 833, 1666, 2499, 4253, 4998, 8506, 12759, 25518, 29771, 59542, 72301, 89313, 144602, 178626, 208397, 216903, 416794, 433806, 506107, 625191, 1012214, 1250382, 1518321, 3036642, 3542749, 7085498, 10628247, 21256494]

約数ペア:

[(1, 21256494), (2, 10628247), (3, 7085498), (6, 3542749), (7, 3036642), (14, 1518321), (17, 1250382), (21, 1012214), (34, 625191), (42, 506107), (49, 433806), (51, 416794), (98, 216903), (102, 208397), (119, 178626), (147, 144602), (238, 89313), (294, 72301), (357, 59542), (714, 29771), (833, 25518), (1666, 12759), (2499, 8506), (4253, 4998)]