18785440

素因数分解:

$2^5\times 5^1\times {\mathrm{137}}^1\times {\mathrm{857}}^1$

素因数の和:1009

約数の個数: 48

約数和(自身を含む): 44756712

約数和(自身を除く): 25971272

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 137, 160, 274, 548, 685, 857, 1096, 1370, 1714, 2192, 2740, 3428, 4285, 4384, 5480, 6856, 8570, 10960, 13712, 17140, 21920, 27424, 34280, 68560, 117409, 137120, 234818, 469636, 587045, 939272, 1174090, 1878544, 2348180, 3757088, 4696360, 9392720, 18785440]

約数ペア:

[(1, 18785440), (2, 9392720), (4, 4696360), (5, 3757088), (8, 2348180), (10, 1878544), (16, 1174090), (20, 939272), (32, 587045), (40, 469636), (80, 234818), (137, 137120), (160, 117409), (274, 68560), (548, 34280), (685, 27424), (857, 21920), (1096, 17140), (1370, 13712), (1714, 10960), (2192, 8570), (2740, 6856), (3428, 5480), (4285, 4384)]