20956928

素因数分解:

$2^8\times {\mathrm{71}}^1\times {\mathrm{1153}}^1$

素因数の和:1240

約数の個数: 36

約数和(自身を含む): 42457968

約数和(自身を除く): 21501040

約数列:

[1, 2, 4, 8, 16, 32, 64, 71, 128, 142, 256, 284, 568, 1136, 1153, 2272, 2306, 4544, 4612, 9088, 9224, 18176, 18448, 36896, 73792, 81863, 147584, 163726, 295168, 327452, 654904, 1309808, 2619616, 5239232, 10478464, 20956928]

約数ペア:

[(1, 20956928), (2, 10478464), (4, 5239232), (8, 2619616), (16, 1309808), (32, 654904), (64, 327452), (71, 295168), (128, 163726), (142, 147584), (256, 81863), (284, 73792), (568, 36896), (1136, 18448), (1153, 18176), (2272, 9224), (2306, 9088), (4544, 4612)]