19994640789

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{577}}^1\times {\mathrm{4397}}^1$

素因数の和:5085

約数の個数: 32

約数和(自身を含む): 27820129536

約数和(自身を除く): 7825488747

約数列:

[1, 3, 37, 71, 111, 213, 577, 1731, 2627, 4397, 7881, 13191, 21349, 40967, 64047, 122901, 162689, 312187, 488067, 936561, 1515779, 2537069, 4547337, 7611207, 11550919, 34652757, 93871553, 180131899, 281614659, 540395697, 6664880263, 19994640789]

約数ペア:

[(1, 19994640789), (3, 6664880263), (37, 540395697), (71, 281614659), (111, 180131899), (213, 93871553), (577, 34652757), (1731, 11550919), (2627, 7611207), (4397, 4547337), (7881, 2537069), (13191, 1515779), (21349, 936561), (40967, 488067), (64047, 312187), (122901, 162689)]