21918057

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^2\times {\mathrm{1973}}^1$

素因数の和:2029

約数の個数: 24

約数和(自身を含む): 34931904

約数和(自身を除く): 13013847

約数列:

[1, 3, 7, 21, 23, 69, 161, 483, 529, 1587, 1973, 3703, 5919, 11109, 13811, 41433, 45379, 136137, 317653, 952959, 1043717, 3131151, 7306019, 21918057]

約数ペア:

[(1, 21918057), (3, 7306019), (7, 3131151), (21, 1043717), (23, 952959), (69, 317653), (161, 136137), (483, 45379), (529, 41433), (1587, 13811), (1973, 11109), (3703, 5919)]