20666485

素因数分解:

$5^1\times 7^2\times {\mathrm{67}}^1\times {\mathrm{1259}}^1$

素因数の和:1345

約数の個数: 24

約数和(自身を含む): 29302560

約数和(自身を除く): 8636075

約数列:

[1, 5, 7, 35, 49, 67, 245, 335, 469, 1259, 2345, 3283, 6295, 8813, 16415, 44065, 61691, 84353, 308455, 421765, 590471, 2952355, 4133297, 20666485]

約数ペア:

[(1, 20666485), (5, 4133297), (7, 2952355), (35, 590471), (49, 421765), (67, 308455), (245, 84353), (335, 61691), (469, 44065), (1259, 16415), (2345, 8813), (3283, 6295)]