18720814

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{70379}}^1$

素因数の和:70407

約数の個数: 16

約数和(自身を含む): 33782400

約数和(自身を除く): 15061586

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 70379, 140758, 492653, 985306, 1337201, 2674402, 9360407, 18720814]

約数ペア:

[(1, 18720814), (2, 9360407), (7, 2674402), (14, 1337201), (19, 985306), (38, 492653), (133, 140758), (266, 70379)]