2021111320

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{25819}}^1$

素因数の和:25952

約数の個数: 64

約数和(自身を含む): 4833504000

約数和(自身を除く): 2812392680

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 103, 152, 190, 206, 380, 412, 515, 760, 824, 1030, 1957, 2060, 3914, 4120, 7828, 9785, 15656, 19570, 25819, 39140, 51638, 78280, 103276, 129095, 206552, 258190, 490561, 516380, 981122, 1032760, 1962244, 2452805, 2659357, 3924488, 4905610, 5318714, 9811220, 10637428, 13296785, 19622440, 21274856, 26593570, 50527783, 53187140, 101055566, 106374280, 202111132, 252638915, 404222264, 505277830, 1010555660, 2021111320]

約数ペア:

[(1, 2021111320), (2, 1010555660), (4, 505277830), (5, 404222264), (8, 252638915), (10, 202111132), (19, 106374280), (20, 101055566), (38, 53187140), (40, 50527783), (76, 26593570), (95, 21274856), (103, 19622440), (152, 13296785), (190, 10637428), (206, 9811220), (380, 5318714), (412, 4905610), (515, 3924488), (760, 2659357), (824, 2452805), (1030, 1962244), (1957, 1032760), (2060, 981122), (3914, 516380), (4120, 490561), (7828, 258190), (9785, 206552), (15656, 129095), (19570, 103276), (25819, 78280), (39140, 51638)]