21513016

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{20219}}^1$

素因数の和:20251

約数の個数: 32

約数和(自身を含む): 48528000

約数和(自身を除く): 27014984

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 56, 76, 133, 152, 266, 532, 1064, 20219, 40438, 80876, 141533, 161752, 283066, 384161, 566132, 768322, 1132264, 1536644, 2689127, 3073288, 5378254, 10756508, 21513016]

約数ペア:

[(1, 21513016), (2, 10756508), (4, 5378254), (7, 3073288), (8, 2689127), (14, 1536644), (19, 1132264), (28, 768322), (38, 566132), (56, 384161), (76, 283066), (133, 161752), (152, 141533), (266, 80876), (532, 40438), (1064, 20219)]