21717045

素因数分解:

$3^3\times 5^1\times 7^4\times {\mathrm{67}}^1$

素因数の和:109

約数の個数: 80

約数和(自身を含む): 45712320

約数和(自身を除く): 23995275

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 49, 63, 67, 105, 135, 147, 189, 201, 245, 315, 335, 343, 441, 469, 603, 735, 945, 1005, 1029, 1323, 1407, 1715, 1809, 2205, 2345, 2401, 3015, 3087, 3283, 4221, 5145, 6615, 7035, 7203, 9045, 9261, 9849, 12005, 12663, 15435, 16415, 21105, 21609, 22981, 29547, 36015, 46305, 49245, 63315, 64827, 68943, 88641, 108045, 114905, 147735, 160867, 206829, 324135, 344715, 443205, 482601, 620487, 804335, 1034145, 1447803, 2413005, 3102435, 4343409, 7239015, 21717045]

約数ペア:

[(1, 21717045), (3, 7239015), (5, 4343409), (7, 3102435), (9, 2413005), (15, 1447803), (21, 1034145), (27, 804335), (35, 620487), (45, 482601), (49, 443205), (63, 344715), (67, 324135), (105, 206829), (135, 160867), (147, 147735), (189, 114905), (201, 108045), (245, 88641), (315, 68943), (335, 64827), (343, 63315), (441, 49245), (469, 46305), (603, 36015), (735, 29547), (945, 22981), (1005, 21609), (1029, 21105), (1323, 16415), (1407, 15435), (1715, 12663), (1809, 12005), (2205, 9849), (2345, 9261), (2401, 9045), (3015, 7203), (3087, 7035), (3283, 6615), (4221, 5145)]