20775755

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{593}}^1$

素因数の和:636

約数の個数: 48

約数和(自身を含む): 34128864

約数和(自身を除く): 13353109

約数列:

[1, 5, 7, 11, 13, 35, 49, 55, 65, 77, 91, 143, 245, 385, 455, 539, 593, 637, 715, 1001, 2695, 2965, 3185, 4151, 5005, 6523, 7007, 7709, 20755, 29057, 32615, 35035, 38545, 45661, 53963, 84799, 145285, 228305, 269815, 319627, 377741, 423995, 593593, 1598135, 1888705, 2967965, 4155151, 20775755]

約数ペア:

[(1, 20775755), (5, 4155151), (7, 2967965), (11, 1888705), (13, 1598135), (35, 593593), (49, 423995), (55, 377741), (65, 319627), (77, 269815), (91, 228305), (143, 145285), (245, 84799), (385, 53963), (455, 45661), (539, 38545), (593, 35035), (637, 32615), (715, 29057), (1001, 20755), (2695, 7709), (2965, 7007), (3185, 6523), (4151, 5005)]