20903477

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{2153}}^1$

素因数の和:2252

約数の個数: 16

約数和(自身を含む): 25503360

約数和(自身を除く): 4599883

約数列:

[1, 7, 19, 73, 133, 511, 1387, 2153, 9709, 15071, 40907, 157169, 286349, 1100183, 2986211, 20903477]

約数ペア:

[(1, 20903477), (7, 2986211), (19, 1100183), (73, 286349), (133, 157169), (511, 40907), (1387, 15071), (2153, 9709)]