18961904

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{91163}}^1$

素因数の和:91184

約数の個数: 20

約数和(自身を含む): 39565176

約数和(自身を除く): 20603272

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 91163, 182326, 364652, 729304, 1185119, 1458608, 2370238, 4740476, 9480952, 18961904]

約数ペア:

[(1, 18961904), (2, 9480952), (4, 4740476), (8, 2370238), (13, 1458608), (16, 1185119), (26, 729304), (52, 364652), (104, 182326), (208, 91163)]