20007016

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{181}}^1\times {\mathrm{337}}^1$

素因数の和:565

約数の個数: 32

約数和(自身を含む): 38755080

約数和(自身を除く): 18748064

約数列:

[1, 2, 4, 8, 41, 82, 164, 181, 328, 337, 362, 674, 724, 1348, 1448, 2696, 7421, 13817, 14842, 27634, 29684, 55268, 59368, 60997, 110536, 121994, 243988, 487976, 2500877, 5001754, 10003508, 20007016]

約数ペア:

[(1, 20007016), (2, 10003508), (4, 5001754), (8, 2500877), (41, 487976), (82, 243988), (164, 121994), (181, 110536), (328, 60997), (337, 59368), (362, 55268), (674, 29684), (724, 27634), (1348, 14842), (1448, 13817), (2696, 7421)]