20645968

素因数分解:

$2^4\times 7^1\times {\mathrm{337}}^1\times {\mathrm{547}}^1$

素因数の和:899

約数の個数: 40

約数和(自身を含む): 45935552

約数和(自身を除く): 25289584

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 337, 547, 674, 1094, 1348, 2188, 2359, 2696, 3829, 4376, 4718, 5392, 7658, 8752, 9436, 15316, 18872, 30632, 37744, 61264, 184339, 368678, 737356, 1290373, 1474712, 2580746, 2949424, 5161492, 10322984, 20645968]

約数ペア:

[(1, 20645968), (2, 10322984), (4, 5161492), (7, 2949424), (8, 2580746), (14, 1474712), (16, 1290373), (28, 737356), (56, 368678), (112, 184339), (337, 61264), (547, 37744), (674, 30632), (1094, 18872), (1348, 15316), (2188, 9436), (2359, 8752), (2696, 7658), (3829, 5392), (4376, 4718)]