220689

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{113}}^1$

素因数の和:157

約数の個数: 24

約数和(自身を含む): 379392

約数和(自身を除く): 158703

約数列:

[1, 3, 7, 9, 21, 31, 63, 93, 113, 217, 279, 339, 651, 791, 1017, 1953, 2373, 3503, 7119, 10509, 24521, 31527, 73563, 220689]

約数ペア:

[(1, 220689), (3, 73563), (7, 31527), (9, 24521), (21, 10509), (31, 7119), (63, 3503), (93, 2373), (113, 1953), (217, 1017), (279, 791), (339, 651)]