2158656784

素因数分解:

$2^4\times {\mathrm{401}}^1\times {\mathrm{509}}^1\times {\mathrm{661}}^1$

素因数の和:1579

約数の個数: 40

約数和(自身を含む): 4207420440

約数和(自身を除く): 2048763656

約数列:

[1, 2, 4, 8, 16, 401, 509, 661, 802, 1018, 1322, 1604, 2036, 2644, 3208, 4072, 5288, 6416, 8144, 10576, 204109, 265061, 336449, 408218, 530122, 672898, 816436, 1060244, 1345796, 1632872, 2120488, 2691592, 3265744, 4240976, 5383184, 134916049, 269832098, 539664196, 1079328392, 2158656784]

約数ペア:

[(1, 2158656784), (2, 1079328392), (4, 539664196), (8, 269832098), (16, 134916049), (401, 5383184), (509, 4240976), (661, 3265744), (802, 2691592), (1018, 2120488), (1322, 1632872), (1604, 1345796), (2036, 1060244), (2644, 816436), (3208, 672898), (4072, 530122), (5288, 408218), (6416, 336449), (8144, 265061), (10576, 204109)]