19941344

素因数分解:

$2^5\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1$

素因数の和:279

約数の個数: 48

約数和(自身を含む): 40715136

約数和(自身を除く): 20773792

約数列:

[1, 2, 4, 8, 16, 32, 67, 71, 131, 134, 142, 262, 268, 284, 524, 536, 568, 1048, 1072, 1136, 2096, 2144, 2272, 4192, 4757, 8777, 9301, 9514, 17554, 18602, 19028, 35108, 37204, 38056, 70216, 74408, 76112, 140432, 148816, 152224, 280864, 297632, 623167, 1246334, 2492668, 4985336, 9970672, 19941344]

約数ペア:

[(1, 19941344), (2, 9970672), (4, 4985336), (8, 2492668), (16, 1246334), (32, 623167), (67, 297632), (71, 280864), (131, 152224), (134, 148816), (142, 140432), (262, 76112), (268, 74408), (284, 70216), (524, 38056), (536, 37204), (568, 35108), (1048, 19028), (1072, 18602), (1136, 17554), (2096, 9514), (2144, 9301), (2272, 8777), (4192, 4757)]