81430880

素因数分解:

$2^5\times 5^1\times {\mathrm{508943}}^1$

素因数の和:508958

約数の個数: 24

約数和(自身を含む): 192380832

約数和(自身を除く): 110949952

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 508943, 1017886, 2035772, 2544715, 4071544, 5089430, 8143088, 10178860, 16286176, 20357720, 40715440, 81430880]

約数ペア:

[(1, 81430880), (2, 40715440), (4, 20357720), (5, 16286176), (8, 10178860), (10, 8143088), (16, 5089430), (20, 4071544), (32, 2544715), (40, 2035772), (80, 1017886), (160, 508943)]