21316480

素因数分解:

$2^7\times 5^1\times {\mathrm{19}}^1\times {\mathrm{1753}}^1$

素因数の和:1791

約数の個数: 64

約数和(自身を含む): 53672400

約数和(自身を除く): 32355920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 128, 152, 160, 190, 304, 320, 380, 608, 640, 760, 1216, 1520, 1753, 2432, 3040, 3506, 6080, 7012, 8765, 12160, 14024, 17530, 28048, 33307, 35060, 56096, 66614, 70120, 112192, 133228, 140240, 166535, 224384, 266456, 280480, 333070, 532912, 560960, 666140, 1065824, 1121920, 1332280, 2131648, 2664560, 4263296, 5329120, 10658240, 21316480]

約数ペア:

[(1, 21316480), (2, 10658240), (4, 5329120), (5, 4263296), (8, 2664560), (10, 2131648), (16, 1332280), (19, 1121920), (20, 1065824), (32, 666140), (38, 560960), (40, 532912), (64, 333070), (76, 280480), (80, 266456), (95, 224384), (128, 166535), (152, 140240), (160, 133228), (190, 112192), (304, 70120), (320, 66614), (380, 56096), (608, 35060), (640, 33307), (760, 28048), (1216, 17530), (1520, 14024), (1753, 12160), (2432, 8765), (3040, 7012), (3506, 6080)]