20408075

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{1549}}^1$

素因数の和:1607

約数の個数: 24

約数和(自身を含む): 27676800

約数和(自身を除く): 7268725

約数列:

[1, 5, 17, 25, 31, 85, 155, 425, 527, 775, 1549, 2635, 7745, 13175, 26333, 38725, 48019, 131665, 240095, 658325, 816323, 1200475, 4081615, 20408075]

約数ペア:

[(1, 20408075), (5, 4081615), (17, 1200475), (25, 816323), (31, 658325), (85, 240095), (155, 131665), (425, 48019), (527, 38725), (775, 26333), (1549, 13175), (2635, 7745)]