1378215

素因数分解:

$3^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1$

素因数の和:141

約数の個数: 40

約数和(自身を含む): 2561328

約数和(自身を除く): 1183113

約数列:

[1, 3, 5, 9, 15, 27, 41, 45, 81, 83, 123, 135, 205, 249, 369, 405, 415, 615, 747, 1107, 1245, 1845, 2241, 3321, 3403, 3735, 5535, 6723, 10209, 11205, 16605, 17015, 30627, 33615, 51045, 91881, 153135, 275643, 459405, 1378215]

約数ペア:

[(1, 1378215), (3, 459405), (5, 275643), (9, 153135), (15, 91881), (27, 51045), (41, 33615), (45, 30627), (81, 17015), (83, 16605), (123, 11205), (135, 10209), (205, 6723), (249, 5535), (369, 3735), (405, 3403), (415, 3321), (615, 2241), (747, 1845), (1107, 1245)]