18990608

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{13043}}^1$

素因数の和:13071

約数の個数: 40

約数和(自身を含む): 45288768

約数和(自身を除く): 26298160

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 364, 728, 1456, 13043, 26086, 52172, 91301, 104344, 169559, 182602, 208688, 339118, 365204, 678236, 730408, 1186913, 1356472, 1460816, 2373826, 2712944, 4747652, 9495304, 18990608]

約数ペア:

[(1, 18990608), (2, 9495304), (4, 4747652), (7, 2712944), (8, 2373826), (13, 1460816), (14, 1356472), (16, 1186913), (26, 730408), (28, 678236), (52, 365204), (56, 339118), (91, 208688), (104, 182602), (112, 169559), (182, 104344), (208, 91301), (364, 52172), (728, 26086), (1456, 13043)]