28472920

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{73}}^1\times {\mathrm{199}}^1$

素因数の和:297

約数の個数: 96

約数和(自身を含む): 75924000

約数和(自身を除く): 47451080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 73, 98, 140, 146, 196, 199, 245, 280, 292, 365, 392, 398, 490, 511, 584, 730, 796, 980, 995, 1022, 1393, 1460, 1592, 1960, 1990, 2044, 2555, 2786, 2920, 3577, 3980, 4088, 5110, 5572, 6965, 7154, 7960, 9751, 10220, 11144, 13930, 14308, 14527, 17885, 19502, 20440, 27860, 28616, 29054, 35770, 39004, 48755, 55720, 58108, 71540, 72635, 78008, 97510, 101689, 116216, 143080, 145270, 195020, 203378, 290540, 390040, 406756, 508445, 581080, 711823, 813512, 1016890, 1423646, 2033780, 2847292, 3559115, 4067560, 5694584, 7118230, 14236460, 28472920]

約数ペア:

[(1, 28472920), (2, 14236460), (4, 7118230), (5, 5694584), (7, 4067560), (8, 3559115), (10, 2847292), (14, 2033780), (20, 1423646), (28, 1016890), (35, 813512), (40, 711823), (49, 581080), (56, 508445), (70, 406756), (73, 390040), (98, 290540), (140, 203378), (146, 195020), (196, 145270), (199, 143080), (245, 116216), (280, 101689), (292, 97510), (365, 78008), (392, 72635), (398, 71540), (490, 58108), (511, 55720), (584, 48755), (730, 39004), (796, 35770), (980, 29054), (995, 28616), (1022, 27860), (1393, 20440), (1460, 19502), (1592, 17885), (1960, 14527), (1990, 14308), (2044, 13930), (2555, 11144), (2786, 10220), (2920, 9751), (3577, 7960), (3980, 7154), (4088, 6965), (5110, 5572)]