400274368

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{25321}}^1$

素因数の和:25365

約数の個数: 56

約数和(自身を含む): 900450320

約数和(自身を除く): 500175952

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 32, 38, 52, 64, 76, 104, 152, 208, 247, 304, 416, 494, 608, 832, 988, 1216, 1976, 3952, 7904, 15808, 25321, 50642, 101284, 202568, 329173, 405136, 481099, 658346, 810272, 962198, 1316692, 1620544, 1924396, 2633384, 3848792, 5266768, 6254287, 7697584, 10533536, 12508574, 15395168, 21067072, 25017148, 30790336, 50034296, 100068592, 200137184, 400274368]

約数ペア:

[(1, 400274368), (2, 200137184), (4, 100068592), (8, 50034296), (13, 30790336), (16, 25017148), (19, 21067072), (26, 15395168), (32, 12508574), (38, 10533536), (52, 7697584), (64, 6254287), (76, 5266768), (104, 3848792), (152, 2633384), (208, 1924396), (247, 1620544), (304, 1316692), (416, 962198), (494, 810272), (608, 658346), (832, 481099), (988, 405136), (1216, 329173), (1976, 202568), (3952, 101284), (7904, 50642), (15808, 25321)]