21065660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13679}}^1$

素因数の和:13706

約数の個数: 48

約数和(自身を含む): 55157760

約数和(自身を除く): 34092100

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 13679, 27358, 54716, 68395, 95753, 136790, 150469, 191506, 273580, 300938, 383012, 478765, 601876, 752345, 957530, 1053283, 1504690, 1915060, 2106566, 3009380, 4213132, 5266415, 10532830, 21065660]

約数ペア:

[(1, 21065660), (2, 10532830), (4, 5266415), (5, 4213132), (7, 3009380), (10, 2106566), (11, 1915060), (14, 1504690), (20, 1053283), (22, 957530), (28, 752345), (35, 601876), (44, 478765), (55, 383012), (70, 300938), (77, 273580), (110, 191506), (140, 150469), (154, 136790), (220, 95753), (308, 68395), (385, 54716), (770, 27358), (1540, 13679)]