20411440

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{127}}^1$

素因数の和:195

約数の個数: 120

約数和(自身を含む): 56996352

約数和(自身を除く): 36584912

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 41, 49, 56, 70, 80, 82, 98, 112, 127, 140, 164, 196, 205, 245, 254, 280, 287, 328, 392, 410, 490, 508, 560, 574, 635, 656, 784, 820, 889, 980, 1016, 1148, 1270, 1435, 1640, 1778, 1960, 2009, 2032, 2296, 2540, 2870, 3280, 3556, 3920, 4018, 4445, 4592, 5080, 5207, 5740, 6223, 7112, 8036, 8890, 10045, 10160, 10414, 11480, 12446, 14224, 16072, 17780, 20090, 20828, 22960, 24892, 26035, 31115, 32144, 35560, 36449, 40180, 41656, 49784, 52070, 62230, 71120, 72898, 80360, 83312, 99568, 104140, 124460, 145796, 160720, 182245, 208280, 248920, 255143, 291592, 364490, 416560, 497840, 510286, 583184, 728980, 1020572, 1275715, 1457960, 2041144, 2551430, 2915920, 4082288, 5102860, 10205720, 20411440]

約数ペア:

[(1, 20411440), (2, 10205720), (4, 5102860), (5, 4082288), (7, 2915920), (8, 2551430), (10, 2041144), (14, 1457960), (16, 1275715), (20, 1020572), (28, 728980), (35, 583184), (40, 510286), (41, 497840), (49, 416560), (56, 364490), (70, 291592), (80, 255143), (82, 248920), (98, 208280), (112, 182245), (127, 160720), (140, 145796), (164, 124460), (196, 104140), (205, 99568), (245, 83312), (254, 80360), (280, 72898), (287, 71120), (328, 62230), (392, 52070), (410, 49784), (490, 41656), (508, 40180), (560, 36449), (574, 35560), (635, 32144), (656, 31115), (784, 26035), (820, 24892), (889, 22960), (980, 20828), (1016, 20090), (1148, 17780), (1270, 16072), (1435, 14224), (1640, 12446), (1778, 11480), (1960, 10414), (2009, 10160), (2032, 10045), (2296, 8890), (2540, 8036), (2870, 7112), (3280, 6223), (3556, 5740), (3920, 5207), (4018, 5080), (4445, 4592)]