80498540

素因数分解:

$2^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{18049}}^1$

素因数の和:18281

約数の個数: 24

約数和(自身を含む): 169814400

約数和(自身を除く): 89315860

約数列:

[1, 2, 4, 5, 10, 20, 223, 446, 892, 1115, 2230, 4460, 18049, 36098, 72196, 90245, 180490, 360980, 4024927, 8049854, 16099708, 20124635, 40249270, 80498540]

約数ペア:

[(1, 80498540), (2, 40249270), (4, 20124635), (5, 16099708), (10, 8049854), (20, 4024927), (223, 360980), (446, 180490), (892, 90245), (1115, 72196), (2230, 36098), (4460, 18049)]