21140478896

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{69541049}}^1$

素因数の和:69541076

約数の個数: 20

約数和(自身を含む): 43115451000

約数和(自身を除く): 21974972104

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 69541049, 139082098, 278164196, 556328392, 1112656784, 1321279931, 2642559862, 5285119724, 10570239448, 21140478896]

約数ペア:

[(1, 21140478896), (2, 10570239448), (4, 5285119724), (8, 2642559862), (16, 1321279931), (19, 1112656784), (38, 556328392), (76, 278164196), (152, 139082098), (304, 69541049)]