21680842

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{241}}^1\times {\mathrm{1451}}^1$

素因数の和:1725

約数の個数: 16

約数和(自身を含む): 33732864

約数和(自身を除く): 12052022

約数列:

[1, 2, 31, 62, 241, 482, 1451, 2902, 7471, 14942, 44981, 89962, 349691, 699382, 10840421, 21680842]

約数ペア:

[(1, 21680842), (2, 10840421), (31, 699382), (62, 349691), (241, 89962), (482, 44981), (1451, 14942), (2902, 7471)]