28400284

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{9091}}^1$

素因数の和:9177

約数の個数: 24

約数和(自身を含む): 54988416

約数和(自身を除く): 26588132

約数列:

[1, 2, 4, 11, 22, 44, 71, 142, 284, 781, 1562, 3124, 9091, 18182, 36364, 100001, 200002, 400004, 645461, 1290922, 2581844, 7100071, 14200142, 28400284]

約数ペア:

[(1, 28400284), (2, 14200142), (4, 7100071), (11, 2581844), (22, 1290922), (44, 645461), (71, 400004), (142, 200002), (284, 100001), (781, 36364), (1562, 18182), (3124, 9091)]