20983886

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{1531}}^1$

素因数の和:1640

約数の個数: 32

約数和(自身を含む): 39709440

約数和(自身を除く): 18725554

約数列:

[1, 2, 7, 11, 14, 22, 77, 89, 154, 178, 623, 979, 1246, 1531, 1958, 3062, 6853, 10717, 13706, 16841, 21434, 33682, 117887, 136259, 235774, 272518, 953813, 1498849, 1907626, 2997698, 10491943, 20983886]

約数ペア:

[(1, 20983886), (2, 10491943), (7, 2997698), (11, 1907626), (14, 1498849), (22, 953813), (77, 272518), (89, 235774), (154, 136259), (178, 117887), (623, 33682), (979, 21434), (1246, 16841), (1531, 13706), (1958, 10717), (3062, 6853)]