28021840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{4549}}^1$

素因数の和:4580

約数の個数: 80

約数和(自身を含む): 81244800

約数和(自身を除く): 53222960

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 80, 88, 110, 112, 140, 154, 176, 220, 280, 308, 385, 440, 560, 616, 770, 880, 1232, 1540, 3080, 4549, 6160, 9098, 18196, 22745, 31843, 36392, 45490, 50039, 63686, 72784, 90980, 100078, 127372, 159215, 181960, 200156, 250195, 254744, 318430, 350273, 363920, 400312, 500390, 509488, 636860, 700546, 800624, 1000780, 1273720, 1401092, 1751365, 2001560, 2547440, 2802184, 3502730, 4003120, 5604368, 7005460, 14010920, 28021840]

約数ペア:

[(1, 28021840), (2, 14010920), (4, 7005460), (5, 5604368), (7, 4003120), (8, 3502730), (10, 2802184), (11, 2547440), (14, 2001560), (16, 1751365), (20, 1401092), (22, 1273720), (28, 1000780), (35, 800624), (40, 700546), (44, 636860), (55, 509488), (56, 500390), (70, 400312), (77, 363920), (80, 350273), (88, 318430), (110, 254744), (112, 250195), (140, 200156), (154, 181960), (176, 159215), (220, 127372), (280, 100078), (308, 90980), (385, 72784), (440, 63686), (560, 50039), (616, 45490), (770, 36392), (880, 31843), (1232, 22745), (1540, 18196), (3080, 9098), (4549, 6160)]