20282925

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{293}}^1$

素因数の和:390

約数の個数: 48

約数和(自身を含む): 36747648

約数和(自身を除く): 16464723

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 71, 75, 195, 213, 293, 325, 355, 879, 923, 975, 1065, 1465, 1775, 2769, 3809, 4395, 4615, 5325, 7325, 11427, 13845, 19045, 20803, 21975, 23075, 57135, 62409, 69225, 95225, 104015, 270439, 285675, 312045, 520075, 811317, 1352195, 1560225, 4056585, 6760975, 20282925]

約数ペア:

[(1, 20282925), (3, 6760975), (5, 4056585), (13, 1560225), (15, 1352195), (25, 811317), (39, 520075), (65, 312045), (71, 285675), (75, 270439), (195, 104015), (213, 95225), (293, 69225), (325, 62409), (355, 57135), (879, 23075), (923, 21975), (975, 20803), (1065, 19045), (1465, 13845), (1775, 11427), (2769, 7325), (3809, 5325), (4395, 4615)]