20611864

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1231}}^1$

素因数の和:1280

約数の個数: 64

約数和(自身を含む): 49674240

約数和(自身を除く): 29062376

約数列:

[1, 2, 4, 7, 8, 13, 14, 23, 26, 28, 46, 52, 56, 91, 92, 104, 161, 182, 184, 299, 322, 364, 598, 644, 728, 1196, 1231, 1288, 2093, 2392, 2462, 4186, 4924, 8372, 8617, 9848, 16003, 16744, 17234, 28313, 32006, 34468, 56626, 64012, 68936, 112021, 113252, 128024, 198191, 224042, 226504, 368069, 396382, 448084, 736138, 792764, 896168, 1472276, 1585528, 2576483, 2944552, 5152966, 10305932, 20611864]

約数ペア:

[(1, 20611864), (2, 10305932), (4, 5152966), (7, 2944552), (8, 2576483), (13, 1585528), (14, 1472276), (23, 896168), (26, 792764), (28, 736138), (46, 448084), (52, 396382), (56, 368069), (91, 226504), (92, 224042), (104, 198191), (161, 128024), (182, 113252), (184, 112021), (299, 68936), (322, 64012), (364, 56626), (598, 34468), (644, 32006), (728, 28313), (1196, 17234), (1231, 16744), (1288, 16003), (2093, 9848), (2392, 8617), (2462, 8372), (4186, 4924)]