21644264

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{2609}}^1$

素因数の和:2693

約数の個数: 32

約数和(自身を含む): 43691400

約数和(自身を除く): 22047136

約数列:

[1, 2, 4, 8, 17, 34, 61, 68, 122, 136, 244, 488, 1037, 2074, 2609, 4148, 5218, 8296, 10436, 20872, 44353, 88706, 159149, 177412, 318298, 354824, 636596, 1273192, 2705533, 5411066, 10822132, 21644264]

約数ペア:

[(1, 21644264), (2, 10822132), (4, 5411066), (8, 2705533), (17, 1273192), (34, 636596), (61, 354824), (68, 318298), (122, 177412), (136, 159149), (244, 88706), (488, 44353), (1037, 20872), (2074, 10436), (2609, 8296), (4148, 5218)]