989807

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{149}}^1$

素因数の和:242

約数の個数: 16

約数和(自身を含む): 1243200

約数和(自身を除く): 253393

約数列:

[1, 7, 13, 73, 91, 149, 511, 949, 1043, 1937, 6643, 10877, 13559, 76139, 141401, 989807]

約数ペア:

[(1, 989807), (7, 141401), (13, 76139), (73, 13559), (91, 10877), (149, 6643), (511, 1937), (949, 1043)]