21167744

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{12721}}^1$

素因数の和:12748

約数の個数: 32

約数和(自身を含む): 45417540

約数和(自身を除く): 24249796

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 208, 416, 832, 1664, 12721, 25442, 50884, 101768, 165373, 203536, 330746, 407072, 661492, 814144, 1322984, 1628288, 2645968, 5291936, 10583872, 21167744]

約数ペア:

[(1, 21167744), (2, 10583872), (4, 5291936), (8, 2645968), (13, 1628288), (16, 1322984), (26, 814144), (32, 661492), (52, 407072), (64, 330746), (104, 203536), (128, 165373), (208, 101768), (416, 50884), (832, 25442), (1664, 12721)]