19864208

素因数分解:

$2^4\times 7^2\times {\mathrm{13}}^1\times {\mathrm{1949}}^1$

素因数の和:1984

約数の個数: 60

約数和(自身を含む): 48239100

約数和(自身を除く): 28374892

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 49, 52, 56, 91, 98, 104, 112, 182, 196, 208, 364, 392, 637, 728, 784, 1274, 1456, 1949, 2548, 3898, 5096, 7796, 10192, 13643, 15592, 25337, 27286, 31184, 50674, 54572, 95501, 101348, 109144, 177359, 191002, 202696, 218288, 354718, 382004, 405392, 709436, 764008, 1241513, 1418872, 1528016, 2483026, 2837744, 4966052, 9932104, 19864208]

約数ペア:

[(1, 19864208), (2, 9932104), (4, 4966052), (7, 2837744), (8, 2483026), (13, 1528016), (14, 1418872), (16, 1241513), (26, 764008), (28, 709436), (49, 405392), (52, 382004), (56, 354718), (91, 218288), (98, 202696), (104, 191002), (112, 177359), (182, 109144), (196, 101348), (208, 95501), (364, 54572), (392, 50674), (637, 31184), (728, 27286), (784, 25337), (1274, 15592), (1456, 13643), (1949, 10192), (2548, 7796), (3898, 5096)]