28132419

素因数分解:

$3^1\times 7^2\times {\mathrm{211}}^1\times {\mathrm{907}}^1$

素因数の和:1135

約数の個数: 24

約数和(自身を含む): 43889088

約数和(自身を除く): 15756669

約数列:

[1, 3, 7, 21, 49, 147, 211, 633, 907, 1477, 2721, 4431, 6349, 10339, 19047, 31017, 44443, 133329, 191377, 574131, 1339639, 4018917, 9377473, 28132419]

約数ペア:

[(1, 28132419), (3, 9377473), (7, 4018917), (21, 1339639), (49, 574131), (147, 191377), (211, 133329), (633, 44443), (907, 31017), (1477, 19047), (2721, 10339), (4431, 6349)]