20907760

素因数分解:

$2^4\times 5^1\times {\mathrm{261347}}^1$

素因数の和:261360

約数の個数: 20

約数和(自身を含む): 48610728

約数和(自身を除く): 27702968

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 261347, 522694, 1045388, 1306735, 2090776, 2613470, 4181552, 5226940, 10453880, 20907760]

約数ペア:

[(1, 20907760), (2, 10453880), (4, 5226940), (5, 4181552), (8, 2613470), (10, 2090776), (16, 1306735), (20, 1045388), (40, 522694), (80, 261347)]