18198128

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{87491}}^1$

素因数の和:87512

約数の個数: 20

約数和(自身を含む): 37971528

約数和(自身を除く): 19773400

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 87491, 174982, 349964, 699928, 1137383, 1399856, 2274766, 4549532, 9099064, 18198128]

約数ペア:

[(1, 18198128), (2, 9099064), (4, 4549532), (8, 2274766), (13, 1399856), (16, 1137383), (26, 699928), (52, 349964), (104, 174982), (208, 87491)]