21026530

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{2161}}^1$

素因数の和:2314

約数の個数: 32

約数和(自身を含む): 43585920

約数和(自身を除く): 22559390

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 139, 278, 695, 973, 1390, 1946, 2161, 4322, 4865, 9730, 10805, 15127, 21610, 30254, 75635, 151270, 300379, 600758, 1501895, 2102653, 3003790, 4205306, 10513265, 21026530]

約数ペア:

[(1, 21026530), (2, 10513265), (5, 4205306), (7, 3003790), (10, 2102653), (14, 1501895), (35, 600758), (70, 300379), (139, 151270), (278, 75635), (695, 30254), (973, 21610), (1390, 15127), (1946, 10805), (2161, 9730), (4322, 4865)]