208687031

素因数分解:

$7^3\times {\mathrm{137}}^1\times {\mathrm{4441}}^1$

素因数の和:4599

約数の個数: 16

約数和(自身を含む): 245198400

約数和(自身を除く): 36511369

約数列:

[1, 7, 49, 137, 343, 959, 4441, 6713, 31087, 46991, 217609, 608417, 1523263, 4258919, 29812433, 208687031]

約数ペア:

[(1, 208687031), (7, 29812433), (49, 4258919), (137, 1523263), (343, 608417), (959, 217609), (4441, 46991), (6713, 31087)]