20108336

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{571}}^1$

素因数の和:681

約数の個数: 40

約数和(自身を含む): 40854528

約数和(自身を除く): 20746192

約数列:

[1, 2, 4, 8, 16, 31, 62, 71, 124, 142, 248, 284, 496, 568, 571, 1136, 1142, 2201, 2284, 4402, 4568, 8804, 9136, 17608, 17701, 35216, 35402, 40541, 70804, 81082, 141608, 162164, 283216, 324328, 648656, 1256771, 2513542, 5027084, 10054168, 20108336]

約数ペア:

[(1, 20108336), (2, 10054168), (4, 5027084), (8, 2513542), (16, 1256771), (31, 648656), (62, 324328), (71, 283216), (124, 162164), (142, 141608), (248, 81082), (284, 70804), (496, 40541), (568, 35402), (571, 35216), (1136, 17701), (1142, 17608), (2201, 9136), (2284, 8804), (4402, 4568)]