20155143365

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{208721}}^1$

素因数の和:208853

約数の個数: 32

約数和(自身を含む): 28853729280

約数和(自身を除く): 8698585915

約数列:

[1, 5, 7, 31, 35, 89, 155, 217, 445, 623, 1085, 2759, 3115, 13795, 19313, 96565, 208721, 1043605, 1461047, 6470351, 7305235, 18576169, 32351755, 45292457, 92880845, 130033183, 226462285, 575861239, 650165915, 2879306195, 4031028673, 20155143365]

約数ペア:

[(1, 20155143365), (5, 4031028673), (7, 2879306195), (31, 650165915), (35, 575861239), (89, 226462285), (155, 130033183), (217, 92880845), (445, 45292457), (623, 32351755), (1085, 18576169), (2759, 7305235), (3115, 6470351), (13795, 1461047), (19313, 1043605), (96565, 208721)]