209217869

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{853}}^1\times {\mathrm{947}}^1$

素因数の和:1844

約数の個数: 16

約数和(自身を含む): 246115968

約数和(自身を除く): 36898099

約数列:

[1, 7, 37, 259, 853, 947, 5971, 6629, 31561, 35039, 220927, 245273, 807791, 5654537, 29888267, 209217869]

約数ペア:

[(1, 209217869), (7, 29888267), (37, 5654537), (259, 807791), (853, 245273), (947, 220927), (5971, 35039), (6629, 31561)]