20928128

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{12577}}^1$

素因数の和:12604

約数の個数: 32

約数和(自身を含む): 44903460

約数和(自身を除く): 23975332

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 208, 416, 832, 1664, 12577, 25154, 50308, 100616, 163501, 201232, 327002, 402464, 654004, 804928, 1308008, 1609856, 2616016, 5232032, 10464064, 20928128]

約数ペア:

[(1, 20928128), (2, 10464064), (4, 5232032), (8, 2616016), (13, 1609856), (16, 1308008), (26, 804928), (32, 654004), (52, 402464), (64, 327002), (104, 201232), (128, 163501), (208, 100616), (416, 50308), (832, 25154), (1664, 12577)]