21360784

素因数分解:

$2^4\times {\mathrm{1097}}^1\times {\mathrm{1217}}^1$

素因数の和:2322

約数の個数: 20

約数和(自身を含む): 41458284

約数和(自身を除く): 20097500

約数列:

[1, 2, 4, 8, 16, 1097, 1217, 2194, 2434, 4388, 4868, 8776, 9736, 17552, 19472, 1335049, 2670098, 5340196, 10680392, 21360784]

約数ペア:

[(1, 21360784), (2, 10680392), (4, 5340196), (8, 2670098), (16, 1335049), (1097, 19472), (1217, 17552), (2194, 9736), (2434, 8776), (4388, 4868)]