21247616

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{113}}^2$

素因数の和:253

約数の個数: 48

約数和(自身を含む): 45992310

約数和(自身を除く): 24744694

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 113, 128, 208, 226, 416, 452, 832, 904, 1469, 1664, 1808, 2938, 3616, 5876, 7232, 11752, 12769, 14464, 23504, 25538, 47008, 51076, 94016, 102152, 165997, 188032, 204304, 331994, 408608, 663988, 817216, 1327976, 1634432, 2655952, 5311904, 10623808, 21247616]

約数ペア:

[(1, 21247616), (2, 10623808), (4, 5311904), (8, 2655952), (13, 1634432), (16, 1327976), (26, 817216), (32, 663988), (52, 408608), (64, 331994), (104, 204304), (113, 188032), (128, 165997), (208, 102152), (226, 94016), (416, 51076), (452, 47008), (832, 25538), (904, 23504), (1469, 14464), (1664, 12769), (1808, 11752), (2938, 7232), (3616, 5876)]