78449720

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{20219}}^1$

素因数の和:20327

約数の個数: 32

約数和(自身を含む): 178340400

約数和(自身を除く): 99890680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 20219, 40438, 80876, 101095, 161752, 202190, 404380, 808760, 1961243, 3922486, 7844972, 9806215, 15689944, 19612430, 39224860, 78449720]

約数ペア:

[(1, 78449720), (2, 39224860), (4, 19612430), (5, 15689944), (8, 9806215), (10, 7844972), (20, 3922486), (40, 1961243), (97, 808760), (194, 404380), (388, 202190), (485, 161752), (776, 101095), (970, 80876), (1940, 40438), (3880, 20219)]