20870902

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{11981}}^1$

素因数の和:12063

約数の個数: 16

約数和(自身を含む): 34220592

約数和(自身を除く): 13349690

約数列:

[1, 2, 13, 26, 67, 134, 871, 1742, 11981, 23962, 155753, 311506, 802727, 1605454, 10435451, 20870902]

約数ペア:

[(1, 20870902), (2, 10435451), (13, 1605454), (26, 802727), (67, 311506), (134, 155753), (871, 23962), (1742, 11981)]