20512751615

素因数分解:

$5^1\times {\mathrm{31}}^2\times {\mathrm{41}}^1\times {\mathrm{104123}}^1$

素因数の和:104231

約数の個数: 24

約数和(自身を含む): 26055573264

約数和(自身を除く): 5542821649

約数列:

[1, 5, 31, 41, 155, 205, 961, 1271, 4805, 6355, 39401, 104123, 197005, 520615, 3227813, 4269043, 16139065, 21345215, 100062203, 132340333, 500311015, 661701665, 4102550323, 20512751615]

約数ペア:

[(1, 20512751615), (5, 4102550323), (31, 661701665), (41, 500311015), (155, 132340333), (205, 100062203), (961, 21345215), (1271, 16139065), (4805, 4269043), (6355, 3227813), (39401, 520615), (104123, 197005)]