21825920

素因数分解:

$2^7\times 5^1\times {\mathrm{67}}^1\times {\mathrm{509}}^1$

素因数の和:595

約数の個数: 64

約数和(自身を含む): 53060400

約数和(自身を除く): 31234480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 67, 80, 128, 134, 160, 268, 320, 335, 509, 536, 640, 670, 1018, 1072, 1340, 2036, 2144, 2545, 2680, 4072, 4288, 5090, 5360, 8144, 8576, 10180, 10720, 16288, 20360, 21440, 32576, 34103, 40720, 42880, 65152, 68206, 81440, 136412, 162880, 170515, 272824, 325760, 341030, 545648, 682060, 1091296, 1364120, 2182592, 2728240, 4365184, 5456480, 10912960, 21825920]

約数ペア:

[(1, 21825920), (2, 10912960), (4, 5456480), (5, 4365184), (8, 2728240), (10, 2182592), (16, 1364120), (20, 1091296), (32, 682060), (40, 545648), (64, 341030), (67, 325760), (80, 272824), (128, 170515), (134, 162880), (160, 136412), (268, 81440), (320, 68206), (335, 65152), (509, 42880), (536, 40720), (640, 34103), (670, 32576), (1018, 21440), (1072, 20360), (1340, 16288), (2036, 10720), (2144, 10180), (2545, 8576), (2680, 8144), (4072, 5360), (4288, 5090)]