18590416

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{643}}^1$

素因数の和:803

約数の個数: 40

約数和(自身を含む): 39129440

約数和(自身を除く): 20539024

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 139, 208, 278, 556, 643, 1112, 1286, 1807, 2224, 2572, 3614, 5144, 7228, 8359, 10288, 14456, 16718, 28912, 33436, 66872, 89377, 133744, 178754, 357508, 715016, 1161901, 1430032, 2323802, 4647604, 9295208, 18590416]

約数ペア:

[(1, 18590416), (2, 9295208), (4, 4647604), (8, 2323802), (13, 1430032), (16, 1161901), (26, 715016), (52, 357508), (104, 178754), (139, 133744), (208, 89377), (278, 66872), (556, 33436), (643, 28912), (1112, 16718), (1286, 14456), (1807, 10288), (2224, 8359), (2572, 7228), (3614, 5144)]