21044878

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{139}}^1$

素因数の和:292

約数の個数: 32

約数和(自身を含む): 34685280

約数和(自身を除く): 13640402

約数列:

[1, 2, 17, 34, 61, 73, 122, 139, 146, 278, 1037, 1241, 2074, 2363, 2482, 4453, 4726, 8479, 8906, 10147, 16958, 20294, 75701, 144143, 151402, 172499, 288286, 344998, 618967, 1237934, 10522439, 21044878]

約数ペア:

[(1, 21044878), (2, 10522439), (17, 1237934), (34, 618967), (61, 344998), (73, 288286), (122, 172499), (139, 151402), (146, 144143), (278, 75701), (1037, 20294), (1241, 16958), (2074, 10147), (2363, 8906), (2482, 8479), (4453, 4726)]