20407485

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{263}}^1\times {\mathrm{739}}^1$

素因数の和:1017

約数の個数: 32

約数和(自身を含む): 37509120

約数和(自身を除く): 17101635

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 263, 739, 789, 1315, 1841, 2217, 3695, 3945, 5173, 5523, 9205, 11085, 15519, 25865, 27615, 77595, 194357, 583071, 971785, 1360499, 2915355, 4081497, 6802495, 20407485]

約数ペア:

[(1, 20407485), (3, 6802495), (5, 4081497), (7, 2915355), (15, 1360499), (21, 971785), (35, 583071), (105, 194357), (263, 77595), (739, 27615), (789, 25865), (1315, 15519), (1841, 11085), (2217, 9205), (3695, 5523), (3945, 5173)]