20974872

素因数分解:

$2^3\times 3^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{509}}^1$

素因数の和:636

約数の個数: 64

約数和(自身を含む): 56181600

約数和(自身を除く): 35206728

約数列:

[1, 2, 3, 4, 6, 8, 12, 17, 24, 34, 51, 68, 101, 102, 136, 202, 204, 303, 404, 408, 509, 606, 808, 1018, 1212, 1527, 1717, 2036, 2424, 3054, 3434, 4072, 5151, 6108, 6868, 8653, 10302, 12216, 13736, 17306, 20604, 25959, 34612, 41208, 51409, 51918, 69224, 102818, 103836, 154227, 205636, 207672, 308454, 411272, 616908, 873953, 1233816, 1747906, 2621859, 3495812, 5243718, 6991624, 10487436, 20974872]

約数ペア:

[(1, 20974872), (2, 10487436), (3, 6991624), (4, 5243718), (6, 3495812), (8, 2621859), (12, 1747906), (17, 1233816), (24, 873953), (34, 616908), (51, 411272), (68, 308454), (101, 207672), (102, 205636), (136, 154227), (202, 103836), (204, 102818), (303, 69224), (404, 51918), (408, 51409), (509, 41208), (606, 34612), (808, 25959), (1018, 20604), (1212, 17306), (1527, 13736), (1717, 12216), (2036, 10302), (2424, 8653), (3054, 6868), (3434, 6108), (4072, 5151)]