21621346

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{3541}}^1$

素因数の和:3657

約数の個数: 16

約数和(自身を含む): 33663168

約数和(自身を除く): 12041822

約数列:

[1, 2, 43, 71, 86, 142, 3053, 3541, 6106, 7082, 152263, 251411, 304526, 502822, 10810673, 21621346]

約数ペア:

[(1, 21621346), (2, 10810673), (43, 502822), (71, 304526), (86, 251411), (142, 152263), (3053, 7082), (3541, 6106)]