81339695

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{619}}^1\times {\mathrm{641}}^1$

素因数の和:1306

約数の個数: 16

約数和(自身を含む): 100306080

約数和(自身を除く): 18966385

約数列:

[1, 5, 41, 205, 619, 641, 3095, 3205, 25379, 26281, 126895, 131405, 396779, 1983895, 16267939, 81339695]

約数ペア:

[(1, 81339695), (5, 16267939), (41, 1983895), (205, 396779), (619, 131405), (641, 126895), (3095, 26281), (3205, 25379)]