21165568

素因数分解:

$2^9\times {\mathrm{67}}^1\times {\mathrm{617}}^1$

素因数の和:702

約数の個数: 40

約数和(自身を含む): 42990552

約数和(自身を除く): 21824984

約数列:

[1, 2, 4, 8, 16, 32, 64, 67, 128, 134, 256, 268, 512, 536, 617, 1072, 1234, 2144, 2468, 4288, 4936, 8576, 9872, 17152, 19744, 34304, 39488, 41339, 78976, 82678, 157952, 165356, 315904, 330712, 661424, 1322848, 2645696, 5291392, 10582784, 21165568]

約数ペア:

[(1, 21165568), (2, 10582784), (4, 5291392), (8, 2645696), (16, 1322848), (32, 661424), (64, 330712), (67, 315904), (128, 165356), (134, 157952), (256, 82678), (268, 78976), (512, 41339), (536, 39488), (617, 34304), (1072, 19744), (1234, 17152), (2144, 9872), (2468, 8576), (4288, 4936)]