638149136

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{18121}}^1$

素因数の和:18231

約数の個数: 40

約数和(自身を含む): 1294345728

約数和(自身を除く): 656196592

約数列:

[1, 2, 4, 8, 16, 31, 62, 71, 124, 142, 248, 284, 496, 568, 1136, 2201, 4402, 8804, 17608, 18121, 35216, 36242, 72484, 144968, 289936, 561751, 1123502, 1286591, 2247004, 2573182, 4494008, 5146364, 8988016, 10292728, 20585456, 39884321, 79768642, 159537284, 319074568, 638149136]

約数ペア:

[(1, 638149136), (2, 319074568), (4, 159537284), (8, 79768642), (16, 39884321), (31, 20585456), (62, 10292728), (71, 8988016), (124, 5146364), (142, 4494008), (248, 2573182), (284, 2247004), (496, 1286591), (568, 1123502), (1136, 561751), (2201, 289936), (4402, 144968), (8804, 72484), (17608, 36242), (18121, 35216)]