20993476

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{18287}}^1$

素因数の和:18339

約数の個数: 24

約数和(自身を含む): 43013376

約数和(自身を除く): 22019900

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 164, 287, 574, 1148, 18287, 36574, 73148, 128009, 256018, 512036, 749767, 1499534, 2999068, 5248369, 10496738, 20993476]

約数ペア:

[(1, 20993476), (2, 10496738), (4, 5248369), (7, 2999068), (14, 1499534), (28, 749767), (41, 512036), (82, 256018), (164, 128009), (287, 73148), (574, 36574), (1148, 18287)]