81949904

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{72139}}^1$

素因数の和:72218

約数の個数: 20

約数和(自身を含む): 161016480

約数和(自身を除く): 79066576

約数列:

[1, 2, 4, 8, 16, 71, 142, 284, 568, 1136, 72139, 144278, 288556, 577112, 1154224, 5121869, 10243738, 20487476, 40974952, 81949904]

約数ペア:

[(1, 81949904), (2, 40974952), (4, 20487476), (8, 10243738), (16, 5121869), (71, 1154224), (142, 577112), (284, 288556), (568, 144278), (1136, 72139)]