21691383

素因数分解:

$3^1\times 7^1\times {\mathrm{827}}^1\times {\mathrm{1249}}^1$

素因数の和:2086

約数の個数: 16

約数和(自身を含む): 33120000

約数和(自身を除く): 11428617

約数列:

[1, 3, 7, 21, 827, 1249, 2481, 3747, 5789, 8743, 17367, 26229, 1032923, 3098769, 7230461, 21691383]

約数ペア:

[(1, 21691383), (3, 7230461), (7, 3098769), (21, 1032923), (827, 26229), (1249, 17367), (2481, 8743), (3747, 5789)]