21858760

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{151}}^1$

素因数の和:227

約数の個数: 128

約数和(自身を含む): 63037440

約数和(自身を除く): 41178680

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 47, 55, 56, 70, 77, 88, 94, 110, 140, 151, 154, 188, 220, 235, 280, 302, 308, 329, 376, 385, 440, 470, 517, 604, 616, 658, 755, 770, 940, 1034, 1057, 1208, 1316, 1510, 1540, 1645, 1661, 1880, 2068, 2114, 2585, 2632, 3020, 3080, 3290, 3322, 3619, 4136, 4228, 5170, 5285, 6040, 6580, 6644, 7097, 7238, 8305, 8456, 10340, 10570, 11627, 13160, 13288, 14194, 14476, 16610, 18095, 20680, 21140, 23254, 28388, 28952, 33220, 35485, 36190, 42280, 46508, 49679, 56776, 58135, 66440, 70970, 72380, 78067, 93016, 99358, 116270, 141940, 144760, 156134, 198716, 232540, 248395, 283880, 312268, 390335, 397432, 465080, 496790, 546469, 624536, 780670, 993580, 1092938, 1561340, 1987160, 2185876, 2732345, 3122680, 4371752, 5464690, 10929380, 21858760]

約数ペア:

[(1, 21858760), (2, 10929380), (4, 5464690), (5, 4371752), (7, 3122680), (8, 2732345), (10, 2185876), (11, 1987160), (14, 1561340), (20, 1092938), (22, 993580), (28, 780670), (35, 624536), (40, 546469), (44, 496790), (47, 465080), (55, 397432), (56, 390335), (70, 312268), (77, 283880), (88, 248395), (94, 232540), (110, 198716), (140, 156134), (151, 144760), (154, 141940), (188, 116270), (220, 99358), (235, 93016), (280, 78067), (302, 72380), (308, 70970), (329, 66440), (376, 58135), (385, 56776), (440, 49679), (470, 46508), (517, 42280), (604, 36190), (616, 35485), (658, 33220), (755, 28952), (770, 28388), (940, 23254), (1034, 21140), (1057, 20680), (1208, 18095), (1316, 16610), (1510, 14476), (1540, 14194), (1645, 13288), (1661, 13160), (1880, 11627), (2068, 10570), (2114, 10340), (2585, 8456), (2632, 8305), (3020, 7238), (3080, 7097), (3290, 6644), (3322, 6580), (3619, 6040), (4136, 5285), (4228, 5170)]