20309680

素因数分解:

$2^4\times 5^1\times {\mathrm{253871}}^1$

素因数の和:253884

約数の個数: 20

約数和(自身を含む): 47220192

約数和(自身を除く): 26910512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 253871, 507742, 1015484, 1269355, 2030968, 2538710, 4061936, 5077420, 10154840, 20309680]

約数ペア:

[(1, 20309680), (2, 10154840), (4, 5077420), (5, 4061936), (8, 2538710), (10, 2030968), (16, 1269355), (20, 1015484), (40, 507742), (80, 253871)]