21914915

素因数分解:

$5^1\times {\mathrm{11}}^3\times {\mathrm{37}}^1\times {\mathrm{89}}^1$

素因数の和:164

約数の個数: 32

約数和(自身を含む): 30041280

約数和(自身を除く): 8126365

約数列:

[1, 5, 11, 37, 55, 89, 121, 185, 407, 445, 605, 979, 1331, 2035, 3293, 4477, 4895, 6655, 10769, 16465, 22385, 36223, 49247, 53845, 118459, 181115, 246235, 398453, 592295, 1992265, 4382983, 21914915]

約数ペア:

[(1, 21914915), (5, 4382983), (11, 1992265), (37, 592295), (55, 398453), (89, 246235), (121, 181115), (185, 118459), (407, 53845), (445, 49247), (605, 36223), (979, 22385), (1331, 16465), (2035, 10769), (3293, 6655), (4477, 4895)]