20857386

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{4451}}^1$

素因数の和:4538

約数の個数: 32

約数和(自身を含む): 46158336

約数和(自身を除く): 25300950

約数列:

[1, 2, 3, 6, 11, 22, 33, 66, 71, 142, 213, 426, 781, 1562, 2343, 4451, 4686, 8902, 13353, 26706, 48961, 97922, 146883, 293766, 316021, 632042, 948063, 1896126, 3476231, 6952462, 10428693, 20857386]

約数ペア:

[(1, 20857386), (2, 10428693), (3, 6952462), (6, 3476231), (11, 1896126), (22, 948063), (33, 632042), (66, 316021), (71, 293766), (142, 146883), (213, 97922), (426, 48961), (781, 26706), (1562, 13353), (2343, 8902), (4451, 4686)]