77163280

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{8849}}^1$

素因数の和:8971

約数の個数: 40

約数和(自身を含む): 181071000

約数和(自身を除く): 103907720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 4360, 8720, 8849, 17698, 35396, 44245, 70792, 88490, 141584, 176980, 353960, 707920, 964541, 1929082, 3858164, 4822705, 7716328, 9645410, 15432656, 19290820, 38581640, 77163280]

約数ペア:

[(1, 77163280), (2, 38581640), (4, 19290820), (5, 15432656), (8, 9645410), (10, 7716328), (16, 4822705), (20, 3858164), (40, 1929082), (80, 964541), (109, 707920), (218, 353960), (436, 176980), (545, 141584), (872, 88490), (1090, 70792), (1744, 44245), (2180, 35396), (4360, 17698), (8720, 8849)]