77889820

素因数分解:

$2^2\times 5^1\times {\mathrm{349}}^1\times {\mathrm{11159}}^1$

素因数の和:11517

約数の個数: 24

約数和(自身を含む): 164052000

約数和(自身を除く): 86162180

約数列:

[1, 2, 4, 5, 10, 20, 349, 698, 1396, 1745, 3490, 6980, 11159, 22318, 44636, 55795, 111590, 223180, 3894491, 7788982, 15577964, 19472455, 38944910, 77889820]

約数ペア:

[(1, 77889820), (2, 38944910), (4, 19472455), (5, 15577964), (10, 7788982), (20, 3894491), (349, 223180), (698, 111590), (1396, 55795), (1745, 44636), (3490, 22318), (6980, 11159)]