21563654889

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{19374353}}^1$

素因数の和:19374416

約数の個数: 16

約数和(自身を含む): 33478883712

約数和(自身を除く): 11915228823

約数列:

[1, 3, 7, 21, 53, 159, 371, 1113, 19374353, 58123059, 135620471, 406861413, 1026840709, 3080522127, 7187884963, 21563654889]

約数ペア:

[(1, 21563654889), (3, 7187884963), (7, 3080522127), (21, 1026840709), (53, 406861413), (159, 135620471), (371, 58123059), (1113, 19374353)]