20916175

素因数分解:

$5^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{2543}}^1$

素因数の和:2607

約数の個数: 24

約数和(自身を含む): 30283776

約数和(自身を除く): 9367601

約数列:

[1, 5, 7, 25, 35, 47, 175, 235, 329, 1175, 1645, 2543, 8225, 12715, 17801, 63575, 89005, 119521, 445025, 597605, 836647, 2988025, 4183235, 20916175]

約数ペア:

[(1, 20916175), (5, 4183235), (7, 2988025), (25, 836647), (35, 597605), (47, 445025), (175, 119521), (235, 89005), (329, 63575), (1175, 17801), (1645, 12715), (2543, 8225)]