85128760

素因数分解:

$2^3\times 5^1\times {\mathrm{389}}^1\times {\mathrm{5471}}^1$

素因数の和:5871

約数の個数: 32

約数和(自身を含む): 192067200

約数和(自身を除く): 106938440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 389, 778, 1556, 1945, 3112, 3890, 5471, 7780, 10942, 15560, 21884, 27355, 43768, 54710, 109420, 218840, 2128219, 4256438, 8512876, 10641095, 17025752, 21282190, 42564380, 85128760]

約数ペア:

[(1, 85128760), (2, 42564380), (4, 21282190), (5, 17025752), (8, 10641095), (10, 8512876), (20, 4256438), (40, 2128219), (389, 218840), (778, 109420), (1556, 54710), (1945, 43768), (3112, 27355), (3890, 21884), (5471, 15560), (7780, 10942)]