20128781729

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{197}}^1\times {\mathrm{14759}}^1$

素因数の和:15029

約数の個数: 32

約数和(自身を含む): 24689111040

約数和(自身を除く): 4560329311

約数列:

[1, 7, 23, 43, 161, 197, 301, 989, 1379, 4531, 6923, 8471, 14759, 31717, 59297, 103313, 194833, 339457, 634637, 1363831, 2376199, 2907523, 4442459, 14596651, 20352661, 66873029, 102176557, 125023489, 468111203, 875164423, 2875540247, 20128781729]

約数ペア:

[(1, 20128781729), (7, 2875540247), (23, 875164423), (43, 468111203), (161, 125023489), (197, 102176557), (301, 66873029), (989, 20352661), (1379, 14596651), (4531, 4442459), (6923, 2907523), (8471, 2376199), (14759, 1363831), (31717, 634637), (59297, 339457), (103313, 194833)]