20720824

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{151}}^1\times {\mathrm{1009}}^1$

素因数の和:1183

約数の個数: 32

約数和(自身を含む): 41450400

約数和(自身を除く): 20729576

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 151, 302, 604, 1009, 1208, 2018, 2567, 4036, 5134, 8072, 10268, 17153, 20536, 34306, 68612, 137224, 152359, 304718, 609436, 1218872, 2590103, 5180206, 10360412, 20720824]

約数ペア:

[(1, 20720824), (2, 10360412), (4, 5180206), (8, 2590103), (17, 1218872), (34, 609436), (68, 304718), (136, 152359), (151, 137224), (302, 68612), (604, 34306), (1009, 20536), (1208, 17153), (2018, 10268), (2567, 8072), (4036, 5134)]