20553364

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{293}}^1$

素因数の和:400

約数の個数: 48

約数和(自身を含む): 41489280

約数和(自身を除く): 20935916

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 71, 76, 142, 247, 284, 293, 494, 586, 923, 988, 1172, 1349, 1846, 2698, 3692, 3809, 5396, 5567, 7618, 11134, 15236, 17537, 20803, 22268, 35074, 41606, 70148, 72371, 83212, 144742, 270439, 289484, 395257, 540878, 790514, 1081756, 1581028, 5138341, 10276682, 20553364]

約数ペア:

[(1, 20553364), (2, 10276682), (4, 5138341), (13, 1581028), (19, 1081756), (26, 790514), (38, 540878), (52, 395257), (71, 289484), (76, 270439), (142, 144742), (247, 83212), (284, 72371), (293, 70148), (494, 41606), (586, 35074), (923, 22268), (988, 20803), (1172, 17537), (1349, 15236), (1846, 11134), (2698, 7618), (3692, 5567), (3809, 5396)]