20989738

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{19471}}^1$

素因数の和:19498

約数の個数: 24

約数和(自身を含む): 39956544

約数和(自身を除く): 18966806

約数列:

[1, 2, 7, 11, 14, 22, 49, 77, 98, 154, 539, 1078, 19471, 38942, 136297, 214181, 272594, 428362, 954079, 1499267, 1908158, 2998534, 10494869, 20989738]

約数ペア:

[(1, 20989738), (2, 10494869), (7, 2998534), (11, 1908158), (14, 1499267), (22, 954079), (49, 428362), (77, 272594), (98, 214181), (154, 136297), (539, 38942), (1078, 19471)]