18650989

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{113}}^1$

素因数の和:229

約数の個数: 32

約数和(自身を含む): 24295680

約数和(自身を除く): 5644691

約数列:

[1, 7, 17, 19, 73, 113, 119, 133, 323, 511, 791, 1241, 1387, 1921, 2147, 2261, 8249, 8687, 9709, 13447, 15029, 23579, 36499, 57743, 140233, 156731, 165053, 255493, 981631, 1097117, 2664427, 18650989]

約数ペア:

[(1, 18650989), (7, 2664427), (17, 1097117), (19, 981631), (73, 255493), (113, 165053), (119, 156731), (133, 140233), (323, 57743), (511, 36499), (791, 23579), (1241, 15029), (1387, 13447), (1921, 9709), (2147, 8687), (2261, 8249)]