129018920

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{75011}}^1$

素因数の和:75065

約数の個数: 32

約数和(自身を含む): 297047520

約数和(自身を除く): 168028600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 75011, 150022, 300044, 375055, 600088, 750110, 1500220, 3000440, 3225473, 6450946, 12901892, 16127365, 25803784, 32254730, 64509460, 129018920]

約数ペア:

[(1, 129018920), (2, 64509460), (4, 32254730), (5, 25803784), (8, 16127365), (10, 12901892), (20, 6450946), (40, 3225473), (43, 3000440), (86, 1500220), (172, 750110), (215, 600088), (344, 375055), (430, 300044), (860, 150022), (1720, 75011)]