27890920

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{6397}}^1$

素因数の和:6517

約数の個数: 32

約数和(自身を含む): 63340200

約数和(自身を除く): 35449280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 6397, 12794, 25588, 31985, 51176, 63970, 127940, 255880, 697273, 1394546, 2789092, 3486365, 5578184, 6972730, 13945460, 27890920]

約数ペア:

[(1, 27890920), (2, 13945460), (4, 6972730), (5, 5578184), (8, 3486365), (10, 2789092), (20, 1394546), (40, 697273), (109, 255880), (218, 127940), (436, 63970), (545, 51176), (872, 31985), (1090, 25588), (2180, 12794), (4360, 6397)]