21138412

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{16361}}^1$

素因数の和:16401

約数の個数: 24

約数和(自身を含む): 41232240

約数和(自身を除く): 20093828

約数列:

[1, 2, 4, 17, 19, 34, 38, 68, 76, 323, 646, 1292, 16361, 32722, 65444, 278137, 310859, 556274, 621718, 1112548, 1243436, 5284603, 10569206, 21138412]

約数ペア:

[(1, 21138412), (2, 10569206), (4, 5284603), (17, 1243436), (19, 1112548), (34, 621718), (38, 556274), (68, 310859), (76, 278137), (323, 65444), (646, 32722), (1292, 16361)]