257641538

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{72739}}^1$

素因数の和:72782

約数の個数: 32

約数和(自身を含む): 502778880

約数和(自身を除く): 245137342

約数列:

[1, 2, 7, 11, 14, 22, 23, 46, 77, 154, 161, 253, 322, 506, 1771, 3542, 72739, 145478, 509173, 800129, 1018346, 1600258, 1672997, 3345994, 5600903, 11201806, 11710979, 18402967, 23421958, 36805934, 128820769, 257641538]

約数ペア:

[(1, 257641538), (2, 128820769), (7, 36805934), (11, 23421958), (14, 18402967), (22, 11710979), (23, 11201806), (46, 5600903), (77, 3345994), (154, 1672997), (161, 1600258), (253, 1018346), (322, 800129), (506, 509173), (1771, 145478), (3542, 72739)]