21906285

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{271}}^1\times {\mathrm{317}}^1$

素因数の和:613

約数の個数: 32

約数和(自身を含む): 37366272

約数和(自身を除く): 15459987

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 271, 317, 813, 951, 1355, 1585, 4065, 4607, 4755, 5389, 13821, 16167, 23035, 26945, 69105, 80835, 85907, 257721, 429535, 1288605, 1460419, 4381257, 7302095, 21906285]

約数ペア:

[(1, 21906285), (3, 7302095), (5, 4381257), (15, 1460419), (17, 1288605), (51, 429535), (85, 257721), (255, 85907), (271, 80835), (317, 69105), (813, 26945), (951, 23035), (1355, 16167), (1585, 13821), (4065, 5389), (4607, 4755)]