20659737

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1\times {\mathrm{167}}^1$

素因数の和:357

約数の個数: 32

約数和(自身を含む): 32643072

約数和(自身を除く): 11983335

約数列:

[1, 3, 7, 21, 43, 129, 137, 167, 301, 411, 501, 903, 959, 1169, 2877, 3507, 5891, 7181, 17673, 21543, 22879, 41237, 50267, 68637, 123711, 150801, 160153, 480459, 983797, 2951391, 6886579, 20659737]

約数ペア:

[(1, 20659737), (3, 6886579), (7, 2951391), (21, 983797), (43, 480459), (129, 160153), (137, 150801), (167, 123711), (301, 68637), (411, 50267), (501, 41237), (903, 22879), (959, 21543), (1169, 17673), (2877, 7181), (3507, 5891)]