20648860

素因数分解:

$2^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{9649}}^1$

素因数の和:9765

約数の個数: 24

約数和(自身を含む): 43772400

約数和(自身を除く): 23123540

約数列:

[1, 2, 4, 5, 10, 20, 107, 214, 428, 535, 1070, 2140, 9649, 19298, 38596, 48245, 96490, 192980, 1032443, 2064886, 4129772, 5162215, 10324430, 20648860]

約数ペア:

[(1, 20648860), (2, 10324430), (4, 5162215), (5, 4129772), (10, 2064886), (20, 1032443), (107, 192980), (214, 96490), (428, 48245), (535, 38596), (1070, 19298), (2140, 9649)]