215681521

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{17491}}^1$

素因数の和:17580

約数の個数: 16

約数和(自身を含む): 251884800

約数和(自身を除く): 36203279

約数列:

[1, 11, 19, 59, 209, 649, 1121, 12331, 17491, 192401, 332329, 1031969, 3655619, 11351659, 19607411, 215681521]

約数ペア:

[(1, 215681521), (11, 19607411), (19, 11351659), (59, 3655619), (209, 1031969), (649, 332329), (1121, 192401), (12331, 17491)]