638861408

素因数分解:

$2^5\times {\mathrm{71}}^1\times {\mathrm{281189}}^1$

素因数の和:281270

約数の個数: 24

約数和(自身を含む): 1275477840

約数和(自身を除く): 636616432

約数列:

[1, 2, 4, 8, 16, 32, 71, 142, 284, 568, 1136, 2272, 281189, 562378, 1124756, 2249512, 4499024, 8998048, 19964419, 39928838, 79857676, 159715352, 319430704, 638861408]

約数ペア:

[(1, 638861408), (2, 319430704), (4, 159715352), (8, 79857676), (16, 39928838), (32, 19964419), (71, 8998048), (142, 4499024), (284, 2249512), (568, 1124756), (1136, 562378), (2272, 281189)]