18990741

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{229}}^1\times {\mathrm{359}}^1$

素因数の和:609

約数の個数: 32

約数和(自身を含む): 31795200

約数和(自身を除く): 12804459

約数列:

[1, 3, 7, 11, 21, 33, 77, 229, 231, 359, 687, 1077, 1603, 2513, 2519, 3949, 4809, 7539, 7557, 11847, 17633, 27643, 52899, 82211, 82929, 246633, 575477, 904321, 1726431, 2712963, 6330247, 18990741]

約数ペア:

[(1, 18990741), (3, 6330247), (7, 2712963), (11, 1726431), (21, 904321), (33, 575477), (77, 246633), (229, 82929), (231, 82211), (359, 52899), (687, 27643), (1077, 17633), (1603, 11847), (2513, 7557), (2519, 7539), (3949, 4809)]