81645760

素因数分解:

$2^6\times 5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{127}}^1$

素因数の和:199

約数の個数: 168

約数和(自身を含む): 233501184

約数和(自身を除く): 151855424

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 41, 49, 56, 64, 70, 80, 82, 98, 112, 127, 140, 160, 164, 196, 205, 224, 245, 254, 280, 287, 320, 328, 392, 410, 448, 490, 508, 560, 574, 635, 656, 784, 820, 889, 980, 1016, 1120, 1148, 1270, 1312, 1435, 1568, 1640, 1778, 1960, 2009, 2032, 2240, 2296, 2540, 2624, 2870, 3136, 3280, 3556, 3920, 4018, 4064, 4445, 4592, 5080, 5207, 5740, 6223, 6560, 7112, 7840, 8036, 8128, 8890, 9184, 10045, 10160, 10414, 11480, 12446, 13120, 14224, 15680, 16072, 17780, 18368, 20090, 20320, 20828, 22960, 24892, 26035, 28448, 31115, 32144, 35560, 36449, 40180, 40640, 41656, 45920, 49784, 52070, 56896, 62230, 64288, 71120, 72898, 80360, 83312, 91840, 99568, 104140, 124460, 128576, 142240, 145796, 160720, 166624, 182245, 199136, 208280, 248920, 255143, 284480, 291592, 321440, 333248, 364490, 398272, 416560, 497840, 510286, 583184, 642880, 728980, 833120, 995680, 1020572, 1166368, 1275715, 1457960, 1666240, 1991360, 2041144, 2332736, 2551430, 2915920, 4082288, 5102860, 5831840, 8164576, 10205720, 11663680, 16329152, 20411440, 40822880, 81645760]

約数ペア:

[(1, 81645760), (2, 40822880), (4, 20411440), (5, 16329152), (7, 11663680), (8, 10205720), (10, 8164576), (14, 5831840), (16, 5102860), (20, 4082288), (28, 2915920), (32, 2551430), (35, 2332736), (40, 2041144), (41, 1991360), (49, 1666240), (56, 1457960), (64, 1275715), (70, 1166368), (80, 1020572), (82, 995680), (98, 833120), (112, 728980), (127, 642880), (140, 583184), (160, 510286), (164, 497840), (196, 416560), (205, 398272), (224, 364490), (245, 333248), (254, 321440), (280, 291592), (287, 284480), (320, 255143), (328, 248920), (392, 208280), (410, 199136), (448, 182245), (490, 166624), (508, 160720), (560, 145796), (574, 142240), (635, 128576), (656, 124460), (784, 104140), (820, 99568), (889, 91840), (980, 83312), (1016, 80360), (1120, 72898), (1148, 71120), (1270, 64288), (1312, 62230), (1435, 56896), (1568, 52070), (1640, 49784), (1778, 45920), (1960, 41656), (2009, 40640), (2032, 40180), (2240, 36449), (2296, 35560), (2540, 32144), (2624, 31115), (2870, 28448), (3136, 26035), (3280, 24892), (3556, 22960), (3920, 20828), (4018, 20320), (4064, 20090), (4445, 18368), (4592, 17780), (5080, 16072), (5207, 15680), (5740, 14224), (6223, 13120), (6560, 12446), (7112, 11480), (7840, 10414), (8036, 10160), (8128, 10045), (8890, 9184)]