18390928

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{26731}}^1$

素因数の和:26782

約数の個数: 20

約数和(自身を含む): 36462448

約数和(自身を除く): 18071520

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 26731, 53462, 106924, 213848, 427696, 1149433, 2298866, 4597732, 9195464, 18390928]

約数ペア:

[(1, 18390928), (2, 9195464), (4, 4597732), (8, 2298866), (16, 1149433), (43, 427696), (86, 213848), (172, 106924), (344, 53462), (688, 26731)]