81007760

素因数分解:

$2^4\times 5^1\times {\mathrm{1012597}}^1$

素因数の和:1012610

約数の個数: 20

約数和(自身を含む): 188343228

約数和(自身を除く): 107335468

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1012597, 2025194, 4050388, 5062985, 8100776, 10125970, 16201552, 20251940, 40503880, 81007760]

約数ペア:

[(1, 81007760), (2, 40503880), (4, 20251940), (5, 16201552), (8, 10125970), (10, 8100776), (16, 5062985), (20, 4050388), (40, 2025194), (80, 1012597)]