21243544

素因数分解:

$2^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{103}}^1\times {\mathrm{127}}^1$

素因数の和:272

約数の個数: 64

約数和(自身を含む): 47923200

約数和(自身を除く): 26679656

約数列:

[1, 2, 4, 7, 8, 14, 28, 29, 56, 58, 103, 116, 127, 203, 206, 232, 254, 406, 412, 508, 721, 812, 824, 889, 1016, 1442, 1624, 1778, 2884, 2987, 3556, 3683, 5768, 5974, 7112, 7366, 11948, 13081, 14732, 20909, 23896, 25781, 26162, 29464, 41818, 51562, 52324, 83636, 91567, 103124, 104648, 167272, 183134, 206248, 366268, 379349, 732536, 758698, 1517396, 2655443, 3034792, 5310886, 10621772, 21243544]

約数ペア:

[(1, 21243544), (2, 10621772), (4, 5310886), (7, 3034792), (8, 2655443), (14, 1517396), (28, 758698), (29, 732536), (56, 379349), (58, 366268), (103, 206248), (116, 183134), (127, 167272), (203, 104648), (206, 103124), (232, 91567), (254, 83636), (406, 52324), (412, 51562), (508, 41818), (721, 29464), (812, 26162), (824, 25781), (889, 23896), (1016, 20909), (1442, 14732), (1624, 13081), (1778, 11948), (2884, 7366), (2987, 7112), (3556, 5974), (3683, 5768)]