20731165

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{283}}^1$

素因数の和:338

約数の個数: 48

約数和(自身を含む): 32635008

約数和(自身を除く): 11903843

約数列:

[1, 5, 7, 13, 23, 35, 49, 65, 91, 115, 161, 245, 283, 299, 455, 637, 805, 1127, 1415, 1495, 1981, 2093, 3185, 3679, 5635, 6509, 9905, 10465, 13867, 14651, 18395, 25753, 32545, 45563, 69335, 73255, 84617, 128765, 180271, 227815, 318941, 423085, 592319, 901355, 1594705, 2961595, 4146233, 20731165]

約数ペア:

[(1, 20731165), (5, 4146233), (7, 2961595), (13, 1594705), (23, 901355), (35, 592319), (49, 423085), (65, 318941), (91, 227815), (115, 180271), (161, 128765), (245, 84617), (283, 73255), (299, 69335), (455, 45563), (637, 32545), (805, 25753), (1127, 18395), (1415, 14651), (1495, 13867), (1981, 10465), (2093, 9905), (3185, 6509), (3679, 5635)]