21784560

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{12967}}^1$

素因数の和:12990

約数の個数: 80

約数和(自身を含む): 77185536

約数和(自身を除く): 55400976

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 12967, 25934, 38901, 51868, 64835, 77802, 90769, 103736, 129670, 155604, 181538, 194505, 207472, 259340, 272307, 311208, 363076, 389010, 453845, 518680, 544614, 622416, 726152, 778020, 907690, 1037360, 1089228, 1361535, 1452304, 1556040, 1815380, 2178456, 2723070, 3112080, 3630760, 4356912, 5446140, 7261520, 10892280, 21784560]

約数ペア:

[(1, 21784560), (2, 10892280), (3, 7261520), (4, 5446140), (5, 4356912), (6, 3630760), (7, 3112080), (8, 2723070), (10, 2178456), (12, 1815380), (14, 1556040), (15, 1452304), (16, 1361535), (20, 1089228), (21, 1037360), (24, 907690), (28, 778020), (30, 726152), (35, 622416), (40, 544614), (42, 518680), (48, 453845), (56, 389010), (60, 363076), (70, 311208), (80, 272307), (84, 259340), (105, 207472), (112, 194505), (120, 181538), (140, 155604), (168, 129670), (210, 103736), (240, 90769), (280, 77802), (336, 64835), (420, 51868), (560, 38901), (840, 25934), (1680, 12967)]