19778374

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{128431}}^1$

素因数の和:128451

約数の個数: 16

約数和(自身を含む): 36988416

約数和(自身を除く): 17210042

約数列:

[1, 2, 7, 11, 14, 22, 77, 154, 128431, 256862, 899017, 1412741, 1798034, 2825482, 9889187, 19778374]

約数ペア:

[(1, 19778374), (2, 9889187), (7, 2825482), (11, 1798034), (14, 1412741), (22, 899017), (77, 256862), (154, 128431)]