21378724

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{16547}}^1$

素因数の和:16587

約数の個数: 24

約数和(自身を含む): 41700960

約数和(自身を除く): 20322236

約数列:

[1, 2, 4, 17, 19, 34, 38, 68, 76, 323, 646, 1292, 16547, 33094, 66188, 281299, 314393, 562598, 628786, 1125196, 1257572, 5344681, 10689362, 21378724]

約数ペア:

[(1, 21378724), (2, 10689362), (4, 5344681), (17, 1257572), (19, 1125196), (34, 628786), (38, 562598), (68, 314393), (76, 281299), (323, 66188), (646, 33094), (1292, 16547)]