81881744

素因数分解:

$2^4\times 7^2\times {\mathrm{71}}^1\times {\mathrm{1471}}^1$

素因数の和:1564

約数の個数: 60

約数和(自身を含む): 187273728

約数和(自身を除く): 105391984

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 71, 98, 112, 142, 196, 284, 392, 497, 568, 784, 994, 1136, 1471, 1988, 2942, 3479, 3976, 5884, 6958, 7952, 10297, 11768, 13916, 20594, 23536, 27832, 41188, 55664, 72079, 82376, 104441, 144158, 164752, 208882, 288316, 417764, 576632, 731087, 835528, 1153264, 1462174, 1671056, 2924348, 5117609, 5848696, 10235218, 11697392, 20470436, 40940872, 81881744]

約数ペア:

[(1, 81881744), (2, 40940872), (4, 20470436), (7, 11697392), (8, 10235218), (14, 5848696), (16, 5117609), (28, 2924348), (49, 1671056), (56, 1462174), (71, 1153264), (98, 835528), (112, 731087), (142, 576632), (196, 417764), (284, 288316), (392, 208882), (497, 164752), (568, 144158), (784, 104441), (994, 82376), (1136, 72079), (1471, 55664), (1988, 41188), (2942, 27832), (3479, 23536), (3976, 20594), (5884, 13916), (6958, 11768), (7952, 10297)]