21181072

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{797}}^1$

素因数の和:967

約数の個数: 40

約数和(自身を含む): 45122112

約数和(自身を除く): 23941040

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 151, 176, 302, 604, 797, 1208, 1594, 1661, 2416, 3188, 3322, 6376, 6644, 8767, 12752, 13288, 17534, 26576, 35068, 70136, 120347, 140272, 240694, 481388, 962776, 1323817, 1925552, 2647634, 5295268, 10590536, 21181072]

約数ペア:

[(1, 21181072), (2, 10590536), (4, 5295268), (8, 2647634), (11, 1925552), (16, 1323817), (22, 962776), (44, 481388), (88, 240694), (151, 140272), (176, 120347), (302, 70136), (604, 35068), (797, 26576), (1208, 17534), (1594, 13288), (1661, 12752), (2416, 8767), (3188, 6644), (3322, 6376)]