656262920

素因数分解:

$2^3\times 5^1\times {\mathrm{2003}}^1\times {\mathrm{8191}}^1$

素因数の和:10205

約数の個数: 32

約数和(自身を含む): 1477509120

約数和(自身を除く): 821246200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2003, 4006, 8012, 8191, 10015, 16024, 16382, 20030, 32764, 40060, 40955, 65528, 80120, 81910, 163820, 327640, 16406573, 32813146, 65626292, 82032865, 131252584, 164065730, 328131460, 656262920]

約数ペア:

[(1, 656262920), (2, 328131460), (4, 164065730), (5, 131252584), (8, 82032865), (10, 65626292), (20, 32813146), (40, 16406573), (2003, 327640), (4006, 163820), (8012, 81910), (8191, 80120), (10015, 65528), (16024, 40955), (16382, 40060), (20030, 32764)]