21569541

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{54059}}^1$

素因数の和:54088

約数の個数: 16

約数和(自身を含む): 34598400

約数和(自身を除く): 13028859

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 54059, 162177, 378413, 1027121, 1135239, 3081363, 7189847, 21569541]

約数ペア:

[(1, 21569541), (3, 7189847), (7, 3081363), (19, 1135239), (21, 1027121), (57, 378413), (133, 162177), (399, 54059)]