21625479

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{281}}^1\times {\mathrm{503}}^1$

素因数の和:807

約数の個数: 24

約数和(自身を含む): 33257952

約数和(自身を除く): 11632473

約数列:

[1, 3, 9, 17, 51, 153, 281, 503, 843, 1509, 2529, 4527, 4777, 8551, 14331, 25653, 42993, 76959, 141343, 424029, 1272087, 2402831, 7208493, 21625479]

約数ペア:

[(1, 21625479), (3, 7208493), (9, 2402831), (17, 1272087), (51, 424029), (153, 141343), (281, 76959), (503, 42993), (843, 25653), (1509, 14331), (2529, 8551), (4527, 4777)]