20423925

素因数分解:

$3^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{2111}}^1$

素因数の和:2170

約数の個数: 36

約数和(自身を含む): 37449984

約数和(自身を除く): 17026059

約数列:

[1, 3, 5, 9, 15, 25, 43, 45, 75, 129, 215, 225, 387, 645, 1075, 1935, 2111, 3225, 6333, 9675, 10555, 18999, 31665, 52775, 90773, 94995, 158325, 272319, 453865, 474975, 816957, 1361595, 2269325, 4084785, 6807975, 20423925]

約数ペア:

[(1, 20423925), (3, 6807975), (5, 4084785), (9, 2269325), (15, 1361595), (25, 816957), (43, 474975), (45, 453865), (75, 272319), (129, 158325), (215, 94995), (225, 90773), (387, 52775), (645, 31665), (1075, 18999), (1935, 10555), (2111, 9675), (3225, 6333)]