81341180

素因数分解:

$2^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{22721}}^1$

素因数の和:22909

約数の個数: 24

約数和(自身を含む): 171778320

約数和(自身を除く): 90437140

約数列:

[1, 2, 4, 5, 10, 20, 179, 358, 716, 895, 1790, 3580, 22721, 45442, 90884, 113605, 227210, 454420, 4067059, 8134118, 16268236, 20335295, 40670590, 81341180]

約数ペア:

[(1, 81341180), (2, 40670590), (4, 20335295), (5, 16268236), (10, 8134118), (20, 4067059), (179, 454420), (358, 227210), (716, 113605), (895, 90884), (1790, 45442), (3580, 22721)]