21938979

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{4451}}^1$

素因数の和:4538

約数の個数: 16

約数和(自身を含む): 30772224

約数和(自身を除く): 8833245

約数列:

[1, 3, 31, 53, 93, 159, 1643, 4451, 4929, 13353, 137981, 235903, 413943, 707709, 7312993, 21938979]

約数ペア:

[(1, 21938979), (3, 7312993), (31, 707709), (53, 413943), (93, 235903), (159, 137981), (1643, 13353), (4451, 4929)]