18806333

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{149}}^1$

素因数の和:261

約数の個数: 32

約数和(自身を含む): 24864000

約数和(自身を除く): 6057667

約数列:

[1, 7, 13, 19, 73, 91, 133, 149, 247, 511, 949, 1043, 1387, 1729, 1937, 2831, 6643, 9709, 10877, 13559, 18031, 19817, 36803, 76139, 126217, 141401, 206663, 257621, 989807, 1446641, 2686619, 18806333]

約数ペア:

[(1, 18806333), (7, 2686619), (13, 1446641), (19, 989807), (73, 257621), (91, 206663), (133, 141401), (149, 126217), (247, 76139), (511, 36803), (949, 19817), (1043, 18031), (1387, 13559), (1729, 10877), (1937, 9709), (2831, 6643)]