20917072

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{6991}}^1$

素因数の和:7027

約数の個数: 40

約数和(自身を含む): 46818432

約数和(自身を除く): 25901360

約数列:

[1, 2, 4, 8, 11, 16, 17, 22, 34, 44, 68, 88, 136, 176, 187, 272, 374, 748, 1496, 2992, 6991, 13982, 27964, 55928, 76901, 111856, 118847, 153802, 237694, 307604, 475388, 615208, 950776, 1230416, 1307317, 1901552, 2614634, 5229268, 10458536, 20917072]

約数ペア:

[(1, 20917072), (2, 10458536), (4, 5229268), (8, 2614634), (11, 1901552), (16, 1307317), (17, 1230416), (22, 950776), (34, 615208), (44, 475388), (68, 307604), (88, 237694), (136, 153802), (176, 118847), (187, 111856), (272, 76901), (374, 55928), (748, 27964), (1496, 13982), (2992, 6991)]