21993455

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{13789}}^1$

素因数の和:13834

約数の個数: 16

約数和(自身を含む): 29786400

約数和(自身を除く): 7792945

約数列:

[1, 5, 11, 29, 55, 145, 319, 1595, 13789, 68945, 151679, 399881, 758395, 1999405, 4398691, 21993455]

約数ペア:

[(1, 21993455), (5, 4398691), (11, 1999405), (29, 758395), (55, 399881), (145, 151679), (319, 68945), (1595, 13789)]