2780.000000

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{997}}^1$

素因数の和:1020

約数の個数: 24

約数和(自身を含む): 880236

約数和(自身を除く): 465484

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 208, 416, 997, 1994, 3988, 7976, 12961, 15952, 25922, 31904, 51844, 103688, 207376, 414752]

約数ペア:

[(1, 414752), (2, 207376), (4, 103688), (8, 51844), (13, 31904), (16, 25922), (26, 15952), (32, 12961), (52, 7976), (104, 3988), (208, 1994), (416, 997)]