21037305

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{433}}^1$

素因数の和:561

約数の個数: 32

約数和(自身を含む): 34997760

約数和(自身を除く): 13960455

約数列:

[1, 3, 5, 15, 41, 79, 123, 205, 237, 395, 433, 615, 1185, 1299, 2165, 3239, 6495, 9717, 16195, 17753, 34207, 48585, 53259, 88765, 102621, 171035, 266295, 513105, 1402487, 4207461, 7012435, 21037305]

約数ペア:

[(1, 21037305), (3, 7012435), (5, 4207461), (15, 1402487), (41, 513105), (79, 266295), (123, 171035), (205, 102621), (237, 88765), (395, 53259), (433, 48585), (615, 34207), (1185, 17753), (1299, 16195), (2165, 9717), (3239, 6495)]