20291120

素因数分解:

$2^4\times 5^1\times {\mathrm{253639}}^1$

素因数の和:253652

約数の個数: 20

約数和(自身を含む): 47177040

約数和(自身を除く): 26885920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 253639, 507278, 1014556, 1268195, 2029112, 2536390, 4058224, 5072780, 10145560, 20291120]

約数ペア:

[(1, 20291120), (2, 10145560), (4, 5072780), (5, 4058224), (8, 2536390), (10, 2029112), (16, 1268195), (20, 1014556), (40, 507278), (80, 253639)]