257205105

素因数分解:

$3^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{21407}}^1$

素因数の和:21510

約数の個数: 32

約数和(自身を含む): 462412800

約数和(自身を除く): 205207695

約数列:

[1, 3, 5, 9, 15, 27, 45, 89, 135, 267, 445, 801, 1335, 2403, 4005, 12015, 21407, 64221, 107035, 192663, 321105, 577989, 963315, 1905223, 2889945, 5715669, 9526115, 17147007, 28578345, 51441021, 85735035, 257205105]

約数ペア:

[(1, 257205105), (3, 85735035), (5, 51441021), (9, 28578345), (15, 17147007), (27, 9526115), (45, 5715669), (89, 2889945), (135, 1905223), (267, 963315), (445, 577989), (801, 321105), (1335, 192663), (2403, 107035), (4005, 64221), (12015, 21407)]