21596715

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{109}}^1$

素因数の和:181

約数の個数: 96

約数和(自身を含む): 46949760

約数和(自身を除く): 25353045

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 35, 37, 45, 51, 63, 85, 105, 109, 111, 119, 153, 185, 255, 259, 315, 327, 333, 357, 545, 555, 595, 629, 763, 765, 777, 981, 1071, 1295, 1635, 1665, 1785, 1853, 1887, 2289, 2331, 3145, 3815, 3885, 4033, 4403, 4905, 5355, 5559, 5661, 6867, 9265, 9435, 11445, 11655, 12099, 12971, 13209, 16677, 20165, 22015, 27795, 28231, 28305, 34335, 36297, 38913, 39627, 60495, 64855, 66045, 68561, 83385, 84693, 116739, 141155, 181485, 194565, 198135, 205683, 254079, 342805, 423465, 479927, 583695, 617049, 1028415, 1270395, 1439781, 2399635, 3085245, 4319343, 7198905, 21596715]

約数ペア:

[(1, 21596715), (3, 7198905), (5, 4319343), (7, 3085245), (9, 2399635), (15, 1439781), (17, 1270395), (21, 1028415), (35, 617049), (37, 583695), (45, 479927), (51, 423465), (63, 342805), (85, 254079), (105, 205683), (109, 198135), (111, 194565), (119, 181485), (153, 141155), (185, 116739), (255, 84693), (259, 83385), (315, 68561), (327, 66045), (333, 64855), (357, 60495), (545, 39627), (555, 38913), (595, 36297), (629, 34335), (763, 28305), (765, 28231), (777, 27795), (981, 22015), (1071, 20165), (1295, 16677), (1635, 13209), (1665, 12971), (1785, 12099), (1853, 11655), (1887, 11445), (2289, 9435), (2331, 9265), (3145, 6867), (3815, 5661), (3885, 5559), (4033, 5355), (4403, 4905)]