19996350544

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{326567}}^1$

素因数の和:326707

約数の個数: 40

約数和(自身を含む): 40089487680

約数和(自身を除く): 20093137136

約数列:

[1, 2, 4, 8, 16, 43, 86, 89, 172, 178, 344, 356, 688, 712, 1424, 3827, 7654, 15308, 30616, 61232, 326567, 653134, 1306268, 2612536, 5225072, 14042381, 28084762, 29064463, 56169524, 58128926, 112339048, 116257852, 224678096, 232515704, 465031408, 1249771909, 2499543818, 4999087636, 9998175272, 19996350544]

約数ペア:

[(1, 19996350544), (2, 9998175272), (4, 4999087636), (8, 2499543818), (16, 1249771909), (43, 465031408), (86, 232515704), (89, 224678096), (172, 116257852), (178, 112339048), (344, 58128926), (356, 56169524), (688, 29064463), (712, 28084762), (1424, 14042381), (3827, 5225072), (7654, 2612536), (15308, 1306268), (30616, 653134), (61232, 326567)]