21315052

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{6823}}^1$

素因数の和:6909

約数の個数: 24

約数和(自身を含む): 41271552

約数和(自身を除く): 19956500

約数列:

[1, 2, 4, 11, 22, 44, 71, 142, 284, 781, 1562, 3124, 6823, 13646, 27292, 75053, 150106, 300212, 484433, 968866, 1937732, 5328763, 10657526, 21315052]

約数ペア:

[(1, 21315052), (2, 10657526), (4, 5328763), (11, 1937732), (22, 968866), (44, 484433), (71, 300212), (142, 150106), (284, 75053), (781, 27292), (1562, 13646), (3124, 6823)]