20281911

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{271}}^1$

素因数の和:407

約数の個数: 32

約数和(自身を含む): 31073280

約数和(自身を除く): 10791369

約数列:

[1, 3, 13, 19, 39, 57, 101, 247, 271, 303, 741, 813, 1313, 1919, 3523, 3939, 5149, 5757, 10569, 15447, 24947, 27371, 66937, 74841, 82113, 200811, 355823, 520049, 1067469, 1560147, 6760637, 20281911]

約数ペア:

[(1, 20281911), (3, 6760637), (13, 1560147), (19, 1067469), (39, 520049), (57, 355823), (101, 200811), (247, 82113), (271, 74841), (303, 66937), (741, 27371), (813, 24947), (1313, 15447), (1919, 10569), (3523, 5757), (3939, 5149)]