18390489

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{127}}^1$

素因数の和:269

約数の個数: 32

約数和(自身を含む): 27525120

約数和(自身を除く): 9134631

約数列:

[1, 3, 13, 39, 47, 79, 127, 141, 237, 381, 611, 1027, 1651, 1833, 3081, 3713, 4953, 5969, 10033, 11139, 17907, 30099, 48269, 77597, 130429, 144807, 232791, 391287, 471551, 1414653, 6130163, 18390489]

約数ペア:

[(1, 18390489), (3, 6130163), (13, 1414653), (39, 471551), (47, 391287), (79, 232791), (127, 144807), (141, 130429), (237, 77597), (381, 48269), (611, 30099), (1027, 17907), (1651, 11139), (1833, 10033), (3081, 5969), (3713, 4953)]