16680820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{64157}}^1$

素因数の和:64179

約数の個数: 24

約数和(自身を含む): 37724904

約数和(自身を除く): 21044084

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 64157, 128314, 256628, 320785, 641570, 834041, 1283140, 1668082, 3336164, 4170205, 8340410, 16680820]

約数ペア:

[(1, 16680820), (2, 8340410), (4, 4170205), (5, 3336164), (10, 1668082), (13, 1283140), (20, 834041), (26, 641570), (52, 320785), (65, 256628), (130, 128314), (260, 64157)]