20781056

素因数分解:

$2^{11}\times {\mathrm{73}}^1\times {\mathrm{139}}^1$

素因数の和:234

約数の個数: 48

約数和(自身を含む): 42424200

約数和(自身を除く): 21643144

約数列:

[1, 2, 4, 8, 16, 32, 64, 73, 128, 139, 146, 256, 278, 292, 512, 556, 584, 1024, 1112, 1168, 2048, 2224, 2336, 4448, 4672, 8896, 9344, 10147, 17792, 18688, 20294, 35584, 37376, 40588, 71168, 74752, 81176, 142336, 149504, 162352, 284672, 324704, 649408, 1298816, 2597632, 5195264, 10390528, 20781056]

約数ペア:

[(1, 20781056), (2, 10390528), (4, 5195264), (8, 2597632), (16, 1298816), (32, 649408), (64, 324704), (73, 284672), (128, 162352), (139, 149504), (146, 142336), (256, 81176), (278, 74752), (292, 71168), (512, 40588), (556, 37376), (584, 35584), (1024, 20294), (1112, 18688), (1168, 17792), (2048, 10147), (2224, 9344), (2336, 8896), (4448, 4672)]