638183728

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{438313}}^1$

素因数の和:438341

約数の個数: 40

約数和(自身を含む): 1521826208

約数和(自身を除く): 883642480

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 364, 728, 1456, 438313, 876626, 1753252, 3068191, 3506504, 5698069, 6136382, 7013008, 11396138, 12272764, 22792276, 24545528, 39886483, 45584552, 49091056, 79772966, 91169104, 159545932, 319091864, 638183728]

約数ペア:

[(1, 638183728), (2, 319091864), (4, 159545932), (7, 91169104), (8, 79772966), (13, 49091056), (14, 45584552), (16, 39886483), (26, 24545528), (28, 22792276), (52, 12272764), (56, 11396138), (91, 7013008), (104, 6136382), (112, 5698069), (182, 3506504), (208, 3068191), (364, 1753252), (728, 876626), (1456, 438313)]