261343300

素因数分解:

$2^2\times 5^2\times {\mathrm{257}}^1\times {\mathrm{10169}}^1$

素因数の和:10440

約数の個数: 36

約数和(自身を含む): 569377620

約数和(自身を除く): 308034320

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 257, 514, 1028, 1285, 2570, 5140, 6425, 10169, 12850, 20338, 25700, 40676, 50845, 101690, 203380, 254225, 508450, 1016900, 2613433, 5226866, 10453732, 13067165, 26134330, 52268660, 65335825, 130671650, 261343300]

約数ペア:

[(1, 261343300), (2, 130671650), (4, 65335825), (5, 52268660), (10, 26134330), (20, 13067165), (25, 10453732), (50, 5226866), (100, 2613433), (257, 1016900), (514, 508450), (1028, 254225), (1285, 203380), (2570, 101690), (5140, 50845), (6425, 40676), (10169, 25700), (12850, 20338)]