20309205

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{1523}}^1$

素因数の和:1665

約数の個数: 32

約数和(自身を含む): 37453824

約数和(自身を除く): 17144619

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 127, 381, 635, 889, 1523, 1905, 2667, 4445, 4569, 7615, 10661, 13335, 22845, 31983, 53305, 159915, 193421, 580263, 967105, 1353947, 2901315, 4061841, 6769735, 20309205]

約数ペア:

[(1, 20309205), (3, 6769735), (5, 4061841), (7, 2901315), (15, 1353947), (21, 967105), (35, 580263), (105, 193421), (127, 159915), (381, 53305), (635, 31983), (889, 22845), (1523, 13335), (1905, 10661), (2667, 7615), (4445, 4569)]