21951316

素因数分解:

$2^2\times {\mathrm{89}}^1\times {\mathrm{197}}^1\times {\mathrm{313}}^1$

素因数の和:603

約数の個数: 24

約数和(自身を含む): 39168360

約数和(自身を除く): 17217044

約数列:

[1, 2, 4, 89, 178, 197, 313, 356, 394, 626, 788, 1252, 17533, 27857, 35066, 55714, 61661, 70132, 111428, 123322, 246644, 5487829, 10975658, 21951316]

約数ペア:

[(1, 21951316), (2, 10975658), (4, 5487829), (89, 246644), (178, 123322), (197, 111428), (313, 70132), (356, 61661), (394, 55714), (626, 35066), (788, 27857), (1252, 17533)]