19908226

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{17807}}^1$

素因数の和:17865

約数の個数: 16

約数和(自身を含む): 32909184

約数和(自身を除く): 13000958

約数列:

[1, 2, 13, 26, 43, 86, 559, 1118, 17807, 35614, 231491, 462982, 765701, 1531402, 9954113, 19908226]

約数ペア:

[(1, 19908226), (2, 9954113), (13, 1531402), (26, 765701), (43, 462982), (86, 231491), (559, 35614), (1118, 17807)]