18719218

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{70373}}^1$

素因数の和:70401

約数の個数: 16

約数和(自身を含む): 33779520

約数和(自身を除く): 15060302

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 70373, 140746, 492611, 985222, 1337087, 2674174, 9359609, 18719218]

約数ペア:

[(1, 18719218), (2, 9359609), (7, 2674174), (14, 1337087), (19, 985222), (38, 492611), (133, 140746), (266, 70373)]