21027555

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{27487}}^1$

素因数の和:27515

約数の個数: 24

約数和(自身を含む): 38593152

約数和(自身を除く): 17565597

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 27487, 82461, 137435, 247383, 412305, 467279, 1236915, 1401837, 2336395, 4205511, 7009185, 21027555]

約数ペア:

[(1, 21027555), (3, 7009185), (5, 4205511), (9, 2336395), (15, 1401837), (17, 1236915), (45, 467279), (51, 412305), (85, 247383), (153, 137435), (255, 82461), (765, 27487)]