21355485

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{1009}}^1$

素因数の和:1117

約数の個数: 32

約数和(自身を含む): 36650880

約数和(自身を除く): 15295395

約数列:

[1, 3, 5, 15, 17, 51, 83, 85, 249, 255, 415, 1009, 1245, 1411, 3027, 4233, 5045, 7055, 15135, 17153, 21165, 51459, 83747, 85765, 251241, 257295, 418735, 1256205, 1423699, 4271097, 7118495, 21355485]

約数ペア:

[(1, 21355485), (3, 7118495), (5, 4271097), (15, 1423699), (17, 1256205), (51, 418735), (83, 257295), (85, 251241), (249, 85765), (255, 83747), (415, 51459), (1009, 21165), (1245, 17153), (1411, 15135), (3027, 7055), (4233, 5045)]