20681728

素因数分解:

$2^{10}\times {\mathrm{19}}^1\times {\mathrm{1063}}^1$

素因数の和:1102

約数の個数: 44

約数和(自身を含む): 43560160

約数和(自身を除く): 22878432

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 64, 76, 128, 152, 256, 304, 512, 608, 1024, 1063, 1216, 2126, 2432, 4252, 4864, 8504, 9728, 17008, 19456, 20197, 34016, 40394, 68032, 80788, 136064, 161576, 272128, 323152, 544256, 646304, 1088512, 1292608, 2585216, 5170432, 10340864, 20681728]

約数ペア:

[(1, 20681728), (2, 10340864), (4, 5170432), (8, 2585216), (16, 1292608), (19, 1088512), (32, 646304), (38, 544256), (64, 323152), (76, 272128), (128, 161576), (152, 136064), (256, 80788), (304, 68032), (512, 40394), (608, 34016), (1024, 20197), (1063, 19456), (1216, 17008), (2126, 9728), (2432, 8504), (4252, 4864)]