19998290

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{9049}}^1$

素因数の和:9086

約数の個数: 32

約数和(自身を含む): 41050800

約数和(自身を除く): 21052510

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 130, 170, 221, 442, 1105, 2210, 9049, 18098, 45245, 90490, 117637, 153833, 235274, 307666, 588185, 769165, 1176370, 1538330, 1999829, 3999658, 9999145, 19998290]

約数ペア:

[(1, 19998290), (2, 9999145), (5, 3999658), (10, 1999829), (13, 1538330), (17, 1176370), (26, 769165), (34, 588185), (65, 307666), (85, 235274), (130, 153833), (170, 117637), (221, 90490), (442, 45245), (1105, 18098), (2210, 9049)]