20872075

素因数分解:

$5^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{2909}}^1$

素因数の和:2967

約数の個数: 24

約数和(自身を含む): 30310560

約数和(自身を除く): 9438485

約数列:

[1, 5, 7, 25, 35, 41, 175, 205, 287, 1025, 1435, 2909, 7175, 14545, 20363, 72725, 101815, 119269, 509075, 596345, 834883, 2981725, 4174415, 20872075]

約数ペア:

[(1, 20872075), (5, 4174415), (7, 2981725), (25, 834883), (35, 596345), (41, 509075), (175, 119269), (205, 101815), (287, 72725), (1025, 20363), (1435, 14545), (2909, 7175)]