21657160

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{77347}}^1$

素因数の和:77365

約数の個数: 32

約数和(自身を含む): 55690560

約数和(自身を除く): 34033400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 77347, 154694, 309388, 386735, 541429, 618776, 773470, 1082858, 1546940, 2165716, 2707145, 3093880, 4331432, 5414290, 10828580, 21657160]

約数ペア:

[(1, 21657160), (2, 10828580), (4, 5414290), (5, 4331432), (7, 3093880), (8, 2707145), (10, 2165716), (14, 1546940), (20, 1082858), (28, 773470), (35, 618776), (40, 541429), (56, 386735), (70, 309388), (140, 154694), (280, 77347)]