20815870131

素因数分解:

$3^5\times 7^1\times {\mathrm{12237431}}^1$

素因数の和:12237453

約数の個数: 24

約数和(自身を含む): 35635401984

約数和(自身を除く): 14819531853

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 1701, 12237431, 36712293, 85662017, 110136879, 256986051, 330410637, 770958153, 991231911, 2312874459, 2973695733, 6938623377, 20815870131]

約数ペア:

[(1, 20815870131), (3, 6938623377), (7, 2973695733), (9, 2312874459), (21, 991231911), (27, 770958153), (63, 330410637), (81, 256986051), (189, 110136879), (243, 85662017), (567, 36712293), (1701, 12237431)]