20876240

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{3389}}^1$

素因数の和:3420

約数の個数: 80

約数和(自身を含む): 60531840

約数和(自身を除く): 39655600

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, 3389, 6160, 6778, 13556, 16945, 23723, 27112, 33890, 37279, 47446, 54224, 67780, 74558, 94892, 118615, 135560, 149116, 186395, 189784, 237230, 260953, 271120, 298232, 372790, 379568, 474460, 521906, 596464, 745580, 948920, 1043812, 1304765, 1491160, 1897840, 2087624, 2609530, 2982320, 4175248, 5219060, 10438120, 20876240]

約数ペア:

[(1, 20876240), (2, 10438120), (4, 5219060), (5, 4175248), (7, 2982320), (8, 2609530), (10, 2087624), (11, 1897840), (14, 1491160), (16, 1304765), (20, 1043812), (22, 948920), (28, 745580), (35, 596464), (40, 521906), (44, 474460), (55, 379568), (56, 372790), (70, 298232), (77, 271120), (80, 260953), (88, 237230), (110, 189784), (112, 186395), (140, 149116), (154, 135560), (176, 118615), (220, 94892), (280, 74558), (308, 67780), (385, 54224), (440, 47446), (560, 37279), (616, 33890), (770, 27112), (880, 23723), (1232, 16945), (1540, 13556), (3080, 6778), (3389, 6160)]