19886965

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{18329}}^1$

素因数の和:18372

約数の個数: 16

約数和(自身を含む): 28154880

約数和(自身を除く): 8267915

約数列:

[1, 5, 7, 31, 35, 155, 217, 1085, 18329, 91645, 128303, 568199, 641515, 2840995, 3977393, 19886965]

約数ペア:

[(1, 19886965), (5, 3977393), (7, 2840995), (31, 641515), (35, 568199), (155, 128303), (217, 91645), (1085, 18329)]