21561136

素因数分解:

$2^4\times {\mathrm{67}}^1\times {\mathrm{20113}}^1$

素因数の和:20188

約数の個数: 20

約数和(自身を含む): 42400312

約数和(自身を除く): 20839176

約数列:

[1, 2, 4, 8, 16, 67, 134, 268, 536, 1072, 20113, 40226, 80452, 160904, 321808, 1347571, 2695142, 5390284, 10780568, 21561136]

約数ペア:

[(1, 21561136), (2, 10780568), (4, 5390284), (8, 2695142), (16, 1347571), (67, 321808), (134, 160904), (268, 80452), (536, 40226), (1072, 20113)]