21393680

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{151}}^1$

素因数の和:205

約数の個数: 160

約数和(自身を含む): 65138688

約数和(自身を除く): 43745008

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 23, 28, 35, 40, 44, 46, 55, 56, 70, 77, 80, 88, 92, 110, 112, 115, 140, 151, 154, 161, 176, 184, 220, 230, 253, 280, 302, 308, 322, 368, 385, 440, 460, 506, 560, 604, 616, 644, 755, 770, 805, 880, 920, 1012, 1057, 1208, 1232, 1265, 1288, 1510, 1540, 1610, 1661, 1771, 1840, 2024, 2114, 2416, 2530, 2576, 3020, 3080, 3220, 3322, 3473, 3542, 4048, 4228, 5060, 5285, 6040, 6160, 6440, 6644, 6946, 7084, 8305, 8456, 8855, 10120, 10570, 11627, 12080, 12880, 13288, 13892, 14168, 16610, 16912, 17365, 17710, 20240, 21140, 23254, 24311, 26576, 27784, 28336, 33220, 34730, 35420, 38203, 42280, 46508, 48622, 55568, 58135, 66440, 69460, 70840, 76406, 84560, 93016, 97244, 116270, 121555, 132880, 138920, 141680, 152812, 186032, 191015, 194488, 232540, 243110, 267421, 277840, 305624, 382030, 388976, 465080, 486220, 534842, 611248, 764060, 930160, 972440, 1069684, 1337105, 1528120, 1944880, 2139368, 2674210, 3056240, 4278736, 5348420, 10696840, 21393680]

約数ペア:

[(1, 21393680), (2, 10696840), (4, 5348420), (5, 4278736), (7, 3056240), (8, 2674210), (10, 2139368), (11, 1944880), (14, 1528120), (16, 1337105), (20, 1069684), (22, 972440), (23, 930160), (28, 764060), (35, 611248), (40, 534842), (44, 486220), (46, 465080), (55, 388976), (56, 382030), (70, 305624), (77, 277840), (80, 267421), (88, 243110), (92, 232540), (110, 194488), (112, 191015), (115, 186032), (140, 152812), (151, 141680), (154, 138920), (161, 132880), (176, 121555), (184, 116270), (220, 97244), (230, 93016), (253, 84560), (280, 76406), (302, 70840), (308, 69460), (322, 66440), (368, 58135), (385, 55568), (440, 48622), (460, 46508), (506, 42280), (560, 38203), (604, 35420), (616, 34730), (644, 33220), (755, 28336), (770, 27784), (805, 26576), (880, 24311), (920, 23254), (1012, 21140), (1057, 20240), (1208, 17710), (1232, 17365), (1265, 16912), (1288, 16610), (1510, 14168), (1540, 13892), (1610, 13288), (1661, 12880), (1771, 12080), (1840, 11627), (2024, 10570), (2114, 10120), (2416, 8855), (2530, 8456), (2576, 8305), (3020, 7084), (3080, 6946), (3220, 6644), (3322, 6440), (3473, 6160), (3542, 6040), (4048, 5285), (4228, 5060)]