20558859

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{97}}^1$

素因数の和:227

約数の個数: 32

約数和(自身を含む): 29804544

約数和(自身を除く): 9245685

約数列:

[1, 3, 31, 43, 53, 93, 97, 129, 159, 291, 1333, 1643, 2279, 3007, 3999, 4171, 4929, 5141, 6837, 9021, 12513, 15423, 70649, 129301, 159371, 211947, 221063, 387903, 478113, 663189, 6852953, 20558859]

約数ペア:

[(1, 20558859), (3, 6852953), (31, 663189), (43, 478113), (53, 387903), (93, 221063), (97, 211947), (129, 159371), (159, 129301), (291, 70649), (1333, 15423), (1643, 12513), (2279, 9021), (3007, 6837), (3999, 5141), (4171, 4929)]