87765980

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{65497}}^1$

素因数の和:65573

約数の個数: 24

約数和(自身を含む): 187062288

約数和(自身を除く): 99296308

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340, 65497, 130994, 261988, 327485, 654970, 1309940, 4388299, 8776598, 17553196, 21941495, 43882990, 87765980]

約数ペア:

[(1, 87765980), (2, 43882990), (4, 21941495), (5, 17553196), (10, 8776598), (20, 4388299), (67, 1309940), (134, 654970), (268, 327485), (335, 261988), (670, 130994), (1340, 65497)]