18501777

素因数分解:

$3^5\times 7^1\times {\mathrm{73}}^1\times {\mathrm{149}}^1$

素因数の和:244

約数の個数: 48

約数和(自身を含む): 32323200

約数和(自身を除く): 13821423

約数列:

[1, 3, 7, 9, 21, 27, 63, 73, 81, 149, 189, 219, 243, 447, 511, 567, 657, 1043, 1341, 1533, 1701, 1971, 3129, 4023, 4599, 5913, 9387, 10877, 12069, 13797, 17739, 28161, 32631, 36207, 41391, 76139, 84483, 97893, 124173, 228417, 253449, 293679, 685251, 881037, 2055753, 2643111, 6167259, 18501777]

約数ペア:

[(1, 18501777), (3, 6167259), (7, 2643111), (9, 2055753), (21, 881037), (27, 685251), (63, 293679), (73, 253449), (81, 228417), (149, 124173), (189, 97893), (219, 84483), (243, 76139), (447, 41391), (511, 36207), (567, 32631), (657, 28161), (1043, 17739), (1341, 13797), (1533, 12069), (1701, 10877), (1971, 9387), (3129, 5913), (4023, 4599)]