21218792

素因数分解:

$2^3\times 7^1\times {\mathrm{149}}^1\times {\mathrm{2543}}^1$

素因数の和:2705

約数の個数: 32

約数和(自身を含む): 45792000

約数和(自身を除く): 24573208

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 149, 298, 596, 1043, 1192, 2086, 2543, 4172, 5086, 8344, 10172, 17801, 20344, 35602, 71204, 142408, 378907, 757814, 1515628, 2652349, 3031256, 5304698, 10609396, 21218792]

約数ペア:

[(1, 21218792), (2, 10609396), (4, 5304698), (7, 3031256), (8, 2652349), (14, 1515628), (28, 757814), (56, 378907), (149, 142408), (298, 71204), (596, 35602), (1043, 20344), (1192, 17801), (2086, 10172), (2543, 8344), (4172, 5086)]