81004540

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{139663}}^1$

素因数の和:139701

約数の個数: 24

約数和(自身を含む): 175976640

約数和(自身を除く): 94972100

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 139663, 279326, 558652, 698315, 1396630, 2793260, 4050227, 8100454, 16200908, 20251135, 40502270, 81004540]

約数ペア:

[(1, 81004540), (2, 40502270), (4, 20251135), (5, 16200908), (10, 8100454), (20, 4050227), (29, 2793260), (58, 1396630), (116, 698315), (145, 558652), (290, 279326), (580, 139663)]