20909925

素因数分解:

$3^2\times 5^2\times {\mathrm{199}}^1\times {\mathrm{467}}^1$

素因数の和:682

約数の個数: 36

約数和(自身を含む): 37720800

約数和(自身を除く): 16810875

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 199, 225, 467, 597, 995, 1401, 1791, 2335, 2985, 4203, 4975, 7005, 8955, 11675, 14925, 21015, 35025, 44775, 92933, 105075, 278799, 464665, 836397, 1393995, 2323325, 4181985, 6969975, 20909925]

約数ペア:

[(1, 20909925), (3, 6969975), (5, 4181985), (9, 2323325), (15, 1393995), (25, 836397), (45, 464665), (75, 278799), (199, 105075), (225, 92933), (467, 44775), (597, 35025), (995, 21015), (1401, 14925), (1791, 11675), (2335, 8955), (2985, 7005), (4203, 4975)]