21223060

素因数分解:

$2^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{4129}}^1$

素因数の和:4395

約数の個数: 24

約数和(自身を含む): 44752680

約数和(自身を除く): 23529620

約数列:

[1, 2, 4, 5, 10, 20, 257, 514, 1028, 1285, 2570, 4129, 5140, 8258, 16516, 20645, 41290, 82580, 1061153, 2122306, 4244612, 5305765, 10611530, 21223060]

約数ペア:

[(1, 21223060), (2, 10611530), (4, 5305765), (5, 4244612), (10, 2122306), (20, 1061153), (257, 82580), (514, 41290), (1028, 20645), (1285, 16516), (2570, 8258), (4129, 5140)]