20357325

素因数分解:

$3^6\times 5^2\times {\mathrm{1117}}^1$

素因数の和:1145

約数の個数: 42

約数和(自身を含む): 37881194

約数和(自身を除く): 17523869

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 135, 225, 243, 405, 675, 729, 1117, 1215, 2025, 3351, 3645, 5585, 6075, 10053, 16755, 18225, 27925, 30159, 50265, 83775, 90477, 150795, 251325, 271431, 452385, 753975, 814293, 1357155, 2261925, 4071465, 6785775, 20357325]

約数ペア:

[(1, 20357325), (3, 6785775), (5, 4071465), (9, 2261925), (15, 1357155), (25, 814293), (27, 753975), (45, 452385), (75, 271431), (81, 251325), (135, 150795), (225, 90477), (243, 83775), (405, 50265), (675, 30159), (729, 27925), (1117, 18225), (1215, 16755), (2025, 10053), (3351, 6075), (3645, 5585)]