19881961

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{251}}^1\times {\mathrm{379}}^1$

素因数の和:660

約数の個数: 16

約数和(自身を含む): 22982400

約数和(自身を除く): 3100439

約数列:

[1, 11, 19, 209, 251, 379, 2761, 4169, 4769, 7201, 52459, 79211, 95129, 1046419, 1807451, 19881961]

約数ペア:

[(1, 19881961), (11, 1807451), (19, 1046419), (209, 95129), (251, 79211), (379, 52459), (2761, 7201), (4169, 4769)]