9981251

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{151}}^1$

素因数の和:255

約数の個数: 24

約数和(自身を含む): 12476160

約数和(自身を除く): 2494909

約数列:

[1, 7, 19, 49, 71, 133, 151, 497, 931, 1057, 1349, 2869, 3479, 7399, 9443, 10721, 20083, 66101, 75047, 140581, 203699, 525329, 1425893, 9981251]

約数ペア:

[(1, 9981251), (7, 1425893), (19, 525329), (49, 203699), (71, 140581), (133, 75047), (151, 66101), (497, 20083), (931, 10721), (1057, 9443), (1349, 7399), (2869, 3479)]