21905724

素因数分解:

$2^2\times 3^1\times {\mathrm{17}}^1\times {\mathrm{167}}^1\times {\mathrm{643}}^1$

素因数の和:834

約数の個数: 48

約数和(自身を含む): 54528768

約数和(自身を除く): 32623044

約数列:

[1, 2, 3, 4, 6, 12, 17, 34, 51, 68, 102, 167, 204, 334, 501, 643, 668, 1002, 1286, 1929, 2004, 2572, 2839, 3858, 5678, 7716, 8517, 10931, 11356, 17034, 21862, 32793, 34068, 43724, 65586, 107381, 131172, 214762, 322143, 429524, 644286, 1288572, 1825477, 3650954, 5476431, 7301908, 10952862, 21905724]

約数ペア:

[(1, 21905724), (2, 10952862), (3, 7301908), (4, 5476431), (6, 3650954), (12, 1825477), (17, 1288572), (34, 644286), (51, 429524), (68, 322143), (102, 214762), (167, 131172), (204, 107381), (334, 65586), (501, 43724), (643, 34068), (668, 32793), (1002, 21862), (1286, 17034), (1929, 11356), (2004, 10931), (2572, 8517), (2839, 7716), (3858, 5678)]