21484215

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{101}}^1\times {\mathrm{163}}^1$

素因数の和:304

約数の個数: 48

約数和(自身を含む): 39143520

約数和(自身を除く): 17659305

約数列:

[1, 3, 5, 9, 15, 29, 45, 87, 101, 145, 163, 261, 303, 435, 489, 505, 815, 909, 1305, 1467, 1515, 2445, 2929, 4545, 4727, 7335, 8787, 14181, 14645, 16463, 23635, 26361, 42543, 43935, 49389, 70905, 82315, 131805, 148167, 212715, 246945, 477427, 740835, 1432281, 2387135, 4296843, 7161405, 21484215]

約数ペア:

[(1, 21484215), (3, 7161405), (5, 4296843), (9, 2387135), (15, 1432281), (29, 740835), (45, 477427), (87, 246945), (101, 212715), (145, 148167), (163, 131805), (261, 82315), (303, 70905), (435, 49389), (489, 43935), (505, 42543), (815, 26361), (909, 23635), (1305, 16463), (1467, 14645), (1515, 14181), (2445, 8787), (2929, 7335), (4545, 4727)]