21004278

素因数分解:

$2^1\times 3^1\times {\mathrm{131}}^1\times {\mathrm{26723}}^1$

素因数の和:26859

約数の個数: 16

約数和(自身を含む): 42330816

約数和(自身を除く): 21326538

約数列:

[1, 2, 3, 6, 131, 262, 393, 786, 26723, 53446, 80169, 160338, 3500713, 7001426, 10502139, 21004278]

約数ペア:

[(1, 21004278), (2, 10502139), (3, 7001426), (6, 3500713), (131, 160338), (262, 80169), (393, 53446), (786, 26723)]