21300349

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{167}}^1$

素因数の和:337

約数の個数: 24

約数和(自身を含む): 26429760

約数和(自身を除く): 5129411

約数列:

[1, 7, 19, 49, 133, 137, 167, 931, 959, 1169, 2603, 3173, 6713, 8183, 18221, 22211, 22879, 127547, 155477, 160153, 434701, 1121071, 3042907, 21300349]

約数ペア:

[(1, 21300349), (7, 3042907), (19, 1121071), (49, 434701), (133, 160153), (137, 155477), (167, 127547), (931, 22879), (959, 22211), (1169, 18221), (2603, 8183), (3173, 6713)]