20785408

素因数分解:

$2^8\times 7^2\times {\mathrm{1657}}^1$

素因数の和:1687

約数の個数: 54

約数和(自身を含む): 48292566

約数和(自身を除く): 27507158

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 64, 98, 112, 128, 196, 224, 256, 392, 448, 784, 896, 1568, 1657, 1792, 3136, 3314, 6272, 6628, 11599, 12544, 13256, 23198, 26512, 46396, 53024, 81193, 92792, 106048, 162386, 185584, 212096, 324772, 371168, 424192, 649544, 742336, 1299088, 1484672, 2598176, 2969344, 5196352, 10392704, 20785408]

約数ペア:

[(1, 20785408), (2, 10392704), (4, 5196352), (7, 2969344), (8, 2598176), (14, 1484672), (16, 1299088), (28, 742336), (32, 649544), (49, 424192), (56, 371168), (64, 324772), (98, 212096), (112, 185584), (128, 162386), (196, 106048), (224, 92792), (256, 81193), (392, 53024), (448, 46396), (784, 26512), (896, 23198), (1568, 13256), (1657, 12544), (1792, 11599), (3136, 6628), (3314, 6272)]