20305688

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{653}}^1$

素因数の和:708

約数の個数: 48

約数和(自身を含む): 43085520

約数和(自身を除く): 22779832

約数列:

[1, 2, 4, 8, 13, 23, 26, 46, 52, 92, 104, 169, 184, 299, 338, 598, 653, 676, 1196, 1306, 1352, 2392, 2612, 3887, 5224, 7774, 8489, 15019, 15548, 16978, 30038, 31096, 33956, 60076, 67912, 110357, 120152, 195247, 220714, 390494, 441428, 780988, 882856, 1561976, 2538211, 5076422, 10152844, 20305688]

約数ペア:

[(1, 20305688), (2, 10152844), (4, 5076422), (8, 2538211), (13, 1561976), (23, 882856), (26, 780988), (46, 441428), (52, 390494), (92, 220714), (104, 195247), (169, 120152), (184, 110357), (299, 67912), (338, 60076), (598, 33956), (653, 31096), (676, 30038), (1196, 16978), (1306, 15548), (1352, 15019), (2392, 8489), (2612, 7774), (3887, 5224)]