81367760

素因数分解:

$2^4\times 5^1\times {\mathrm{1017097}}^1$

素因数の和:1017110

約数の個数: 20

約数和(自身を含む): 189180228

約数和(自身を除く): 107812468

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1017097, 2034194, 4068388, 5085485, 8136776, 10170970, 16273552, 20341940, 40683880, 81367760]

約数ペア:

[(1, 81367760), (2, 40683880), (4, 20341940), (5, 16273552), (8, 10170970), (10, 8136776), (16, 5085485), (20, 4068388), (40, 2034194), (80, 1017097)]