20665856

素因数分解:

$2^9\times {\mathrm{181}}^1\times {\mathrm{223}}^1$

素因数の和:422

約数の個数: 40

約数和(自身を含む): 41705664

約数和(自身を除く): 21039808

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 181, 223, 256, 362, 446, 512, 724, 892, 1448, 1784, 2896, 3568, 5792, 7136, 11584, 14272, 23168, 28544, 40363, 46336, 57088, 80726, 92672, 114176, 161452, 322904, 645808, 1291616, 2583232, 5166464, 10332928, 20665856]

約数ペア:

[(1, 20665856), (2, 10332928), (4, 5166464), (8, 2583232), (16, 1291616), (32, 645808), (64, 322904), (128, 161452), (181, 114176), (223, 92672), (256, 80726), (362, 57088), (446, 46336), (512, 40363), (724, 28544), (892, 23168), (1448, 14272), (1784, 11584), (2896, 7136), (3568, 5792)]