21081768

素因数分解:

$2^3\times 3^1\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{317}}^1$

素因数の和:506

約数の個数: 64

約数和(自身を含む): 56324160

約数和(自身を除く): 35242392

約数列:

[1, 2, 3, 4, 6, 8, 12, 17, 24, 34, 51, 68, 102, 136, 163, 204, 317, 326, 408, 489, 634, 652, 951, 978, 1268, 1304, 1902, 1956, 2536, 2771, 3804, 3912, 5389, 5542, 7608, 8313, 10778, 11084, 16167, 16626, 21556, 22168, 32334, 33252, 43112, 51671, 64668, 66504, 103342, 129336, 155013, 206684, 310026, 413368, 620052, 878407, 1240104, 1756814, 2635221, 3513628, 5270442, 7027256, 10540884, 21081768]

約数ペア:

[(1, 21081768), (2, 10540884), (3, 7027256), (4, 5270442), (6, 3513628), (8, 2635221), (12, 1756814), (17, 1240104), (24, 878407), (34, 620052), (51, 413368), (68, 310026), (102, 206684), (136, 155013), (163, 129336), (204, 103342), (317, 66504), (326, 64668), (408, 51671), (489, 43112), (634, 33252), (652, 32334), (951, 22168), (978, 21556), (1268, 16626), (1304, 16167), (1902, 11084), (1956, 10778), (2536, 8313), (2771, 7608), (3804, 5542), (3912, 5389)]