21637155

素因数分解:

$3^1\times 5^1\times {\mathrm{47}}^2\times {\mathrm{653}}^1$

素因数の和:755

約数の個数: 24

約数和(自身を含む): 35425872

約数和(自身を除く): 13788717

約数列:

[1, 3, 5, 15, 47, 141, 235, 653, 705, 1959, 2209, 3265, 6627, 9795, 11045, 30691, 33135, 92073, 153455, 460365, 1442477, 4327431, 7212385, 21637155]

約数ペア:

[(1, 21637155), (3, 7212385), (5, 4327431), (15, 1442477), (47, 460365), (141, 153455), (235, 92073), (653, 33135), (705, 30691), (1959, 11045), (2209, 9795), (3265, 6627)]