278319828

素因数分解:

$2^2\times 3^1\times {\mathrm{19}}^1\times {\mathrm{1087}}^1\times {\mathrm{1123}}^1$

素因数の和:2236

約数の個数: 48

約数和(自身を含む): 684830720

約数和(自身を除く): 406510892

約数列:

[1, 2, 3, 4, 6, 12, 19, 38, 57, 76, 114, 228, 1087, 1123, 2174, 2246, 3261, 3369, 4348, 4492, 6522, 6738, 13044, 13476, 20653, 21337, 41306, 42674, 61959, 64011, 82612, 85348, 123918, 128022, 247836, 256044, 1220701, 2441402, 3662103, 4882804, 7324206, 14648412, 23193319, 46386638, 69579957, 92773276, 139159914, 278319828]

約数ペア:

[(1, 278319828), (2, 139159914), (3, 92773276), (4, 69579957), (6, 46386638), (12, 23193319), (19, 14648412), (38, 7324206), (57, 4882804), (76, 3662103), (114, 2441402), (228, 1220701), (1087, 256044), (1123, 247836), (2174, 128022), (2246, 123918), (3261, 85348), (3369, 82612), (4348, 64011), (4492, 61959), (6522, 42674), (6738, 41306), (13044, 21337), (13476, 20653)]