20987186

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{30773}}^1$

素因数の和:30817

約数の個数: 16

約数和(自身を含む): 35451648

約数和(自身を除く): 14464462

約数列:

[1, 2, 11, 22, 31, 62, 341, 682, 30773, 61546, 338503, 677006, 953963, 1907926, 10493593, 20987186]

約数ペア:

[(1, 20987186), (2, 10493593), (11, 1907926), (22, 953963), (31, 677006), (62, 338503), (341, 61546), (682, 30773)]