1241271280

素因数分解:

$2^4\times 5^1\times {\mathrm{15515891}}^1$

素因数の和:15515904

約数の個数: 20

約数和(自身を含む): 2885955912

約数和(自身を除く): 1644684632

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 15515891, 31031782, 62063564, 77579455, 124127128, 155158910, 248254256, 310317820, 620635640, 1241271280]

約数ペア:

[(1, 1241271280), (2, 620635640), (4, 310317820), (5, 248254256), (8, 155158910), (10, 124127128), (16, 77579455), (20, 62063564), (40, 31031782), (80, 15515891)]