21581714

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{353}}^1\times {\mathrm{397}}^1$

素因数の和:770

約数の個数: 32

約数和(自身を含む): 40576896

約数和(自身を除く): 18995182

約数列:

[1, 2, 7, 11, 14, 22, 77, 154, 353, 397, 706, 794, 2471, 2779, 3883, 4367, 4942, 5558, 7766, 8734, 27181, 30569, 54362, 61138, 140141, 280282, 980987, 1541551, 1961974, 3083102, 10790857, 21581714]

約数ペア:

[(1, 21581714), (2, 10790857), (7, 3083102), (11, 1961974), (14, 1541551), (22, 980987), (77, 280282), (154, 140141), (353, 61138), (397, 54362), (706, 30569), (794, 27181), (2471, 8734), (2779, 7766), (3883, 5558), (4367, 4942)]