1390455760

素因数分解:

$2^4\times 5^1\times {\mathrm{17380697}}^1$

素因数の和:17380710

約数の個数: 20

約数和(自身を含む): 3232809828

約数和(自身を除く): 1842354068

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 17380697, 34761394, 69522788, 86903485, 139045576, 173806970, 278091152, 347613940, 695227880, 1390455760]

約数ペア:

[(1, 1390455760), (2, 695227880), (4, 347613940), (5, 278091152), (8, 173806970), (10, 139045576), (16, 86903485), (20, 69522788), (40, 34761394), (80, 17380697)]