1381905

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{107}}^1$

素因数の和:166

約数の個数: 48

約数和(自身を含む): 2830464

約数和(自身を除く): 1448559

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 41, 45, 63, 105, 107, 123, 205, 287, 315, 321, 369, 535, 615, 749, 861, 963, 1435, 1605, 1845, 2247, 2583, 3745, 4305, 4387, 4815, 6741, 11235, 12915, 13161, 21935, 30709, 33705, 39483, 65805, 92127, 153545, 197415, 276381, 460635, 1381905]

約数ペア:

[(1, 1381905), (3, 460635), (5, 276381), (7, 197415), (9, 153545), (15, 92127), (21, 65805), (35, 39483), (41, 33705), (45, 30709), (63, 21935), (105, 13161), (107, 12915), (123, 11235), (205, 6741), (287, 4815), (315, 4387), (321, 4305), (369, 3745), (535, 2583), (615, 2247), (749, 1845), (861, 1605), (963, 1435)]