21063490

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{2297}}^1$

素因数の和:2442

約数の個数: 32

約数和(自身を含む): 43680384

約数和(自身を除く): 22616894

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 131, 262, 655, 917, 1310, 1834, 2297, 4585, 4594, 9170, 11485, 16079, 22970, 32158, 80395, 160790, 300907, 601814, 1504535, 2106349, 3009070, 4212698, 10531745, 21063490]

約数ペア:

[(1, 21063490), (2, 10531745), (5, 4212698), (7, 3009070), (10, 2106349), (14, 1504535), (35, 601814), (70, 300907), (131, 160790), (262, 80395), (655, 32158), (917, 22970), (1310, 16079), (1834, 11485), (2297, 9170), (4585, 4594)]