21947578

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{7253}}^1$

素因数の和:7361

約数の個数: 16

約数和(自身を含む): 35254440

約数和(自身を除く): 13306862

約数列:

[1, 2, 17, 34, 89, 178, 1513, 3026, 7253, 14506, 123301, 246602, 645517, 1291034, 10973789, 21947578]

約数ペア:

[(1, 21947578), (2, 10973789), (17, 1291034), (34, 645517), (89, 246602), (178, 123301), (1513, 14506), (3026, 7253)]