20533569

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{509}}^1$

素因数の和:649

約数の個数: 32

約数和(自身を含む): 33488640

約数和(自身を除く): 12955071

約数列:

[1, 3, 7, 17, 21, 51, 113, 119, 339, 357, 509, 791, 1527, 1921, 2373, 3563, 5763, 8653, 10689, 13447, 25959, 40341, 57517, 60571, 172551, 181713, 402619, 977789, 1207857, 2933367, 6844523, 20533569]

約数ペア:

[(1, 20533569), (3, 6844523), (7, 2933367), (17, 1207857), (21, 977789), (51, 402619), (113, 181713), (119, 172551), (339, 60571), (357, 57517), (509, 40341), (791, 25959), (1527, 13447), (1921, 10689), (2373, 8653), (3563, 5763)]