206821520

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{112403}}^1$

素因数の和:112439

約数の個数: 40

約数和(自身を含む): 501771456

約数和(自身を除く): 294949936

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 920, 1840, 112403, 224806, 449612, 562015, 899224, 1124030, 1798448, 2248060, 2585269, 4496120, 5170538, 8992240, 10341076, 12926345, 20682152, 25852690, 41364304, 51705380, 103410760, 206821520]

約数ペア:

[(1, 206821520), (2, 103410760), (4, 51705380), (5, 41364304), (8, 25852690), (10, 20682152), (16, 12926345), (20, 10341076), (23, 8992240), (40, 5170538), (46, 4496120), (80, 2585269), (92, 2248060), (115, 1798448), (184, 1124030), (230, 899224), (368, 562015), (460, 449612), (920, 224806), (1840, 112403)]