20821542

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{495751}}^1$

素因数の和:495763

約数の個数: 16

約数和(自身を含む): 47592192

約数和(自身を除く): 26770650

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 495751, 991502, 1487253, 2974506, 3470257, 6940514, 10410771, 20821542]

約数ペア:

[(1, 20821542), (2, 10410771), (3, 6940514), (6, 3470257), (7, 2974506), (14, 1487253), (21, 991502), (42, 495751)]