1215855

素因数分解:

$3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{659}}^1$

素因数の和:711

約数の個数: 24

約数和(自身を含む): 2162160

約数和(自身を除く): 946305

約数列:

[1, 3, 5, 9, 15, 41, 45, 123, 205, 369, 615, 659, 1845, 1977, 3295, 5931, 9885, 27019, 29655, 81057, 135095, 243171, 405285, 1215855]

約数ペア:

[(1, 1215855), (3, 405285), (5, 243171), (9, 135095), (15, 81057), (41, 29655), (45, 27019), (123, 9885), (205, 5931), (369, 3295), (615, 1977), (659, 1845)]