20836880

素因数分解:

$2^4\times 5^1\times {\mathrm{260461}}^1$

素因数の和:260474

約数の個数: 20

約数和(自身を含む): 48445932

約数和(自身を除く): 27609052

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 260461, 520922, 1041844, 1302305, 2083688, 2604610, 4167376, 5209220, 10418440, 20836880]

約数ペア:

[(1, 20836880), (2, 10418440), (4, 5209220), (5, 4167376), (8, 2604610), (10, 2083688), (16, 1302305), (20, 1041844), (40, 520922), (80, 260461)]