20561986

素因数分解:

$2^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{6689}}^1$

素因数の和:6773

約数の個数: 16

約数和(自身を含む): 32513400

約数和(自身を除く): 11951414

約数列:

[1, 2, 29, 53, 58, 106, 1537, 3074, 6689, 13378, 193981, 354517, 387962, 709034, 10280993, 20561986]

約数ペア:

[(1, 20561986), (2, 10280993), (29, 709034), (53, 387962), (58, 354517), (106, 193981), (1537, 13378), (3074, 6689)]