21007155

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{6337}}^1$

素因数の和:6375

約数の個数: 32

約数和(自身を含む): 38332224

約数和(自身を除く): 17325069

約数列:

[1, 3, 5, 13, 15, 17, 39, 51, 65, 85, 195, 221, 255, 663, 1105, 3315, 6337, 19011, 31685, 82381, 95055, 107729, 247143, 323187, 411905, 538645, 1235715, 1400477, 1615935, 4201431, 7002385, 21007155]

約数ペア:

[(1, 21007155), (3, 7002385), (5, 4201431), (13, 1615935), (15, 1400477), (17, 1235715), (39, 538645), (51, 411905), (65, 323187), (85, 247143), (195, 107729), (221, 95055), (255, 82381), (663, 31685), (1105, 19011), (3315, 6337)]