28238470

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{217219}}^1$

素因数の和:217239

約数の個数: 16

約数和(自身を含む): 54739440

約数和(自身を除く): 26500970

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 217219, 434438, 1086095, 2172190, 2823847, 5647694, 14119235, 28238470]

約数ペア:

[(1, 28238470), (2, 14119235), (5, 5647694), (10, 2823847), (13, 2172190), (26, 1086095), (65, 434438), (130, 217219)]