21067143

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{83}}^1$

素因数の和:239

約数の個数: 32

約数和(自身を含む): 30831360

約数和(自身を除く): 9764217

約数列:

[1, 3, 19, 57, 61, 73, 83, 183, 219, 249, 1159, 1387, 1577, 3477, 4161, 4453, 4731, 5063, 6059, 13359, 15189, 18177, 84607, 96197, 115121, 253821, 288591, 345363, 369599, 1108797, 7022381, 21067143]

約数ペア:

[(1, 21067143), (3, 7022381), (19, 1108797), (57, 369599), (61, 345363), (73, 288591), (83, 253821), (183, 115121), (219, 96197), (249, 84607), (1159, 18177), (1387, 15189), (1577, 13359), (3477, 6059), (4161, 5063), (4453, 4731)]