204966020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{199}}^1\times {\mathrm{1051}}^1$

素因数の和:1273

約数の個数: 72

約数和(自身を含む): 503697600

約数和(自身を除く): 298731580

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 199, 245, 398, 490, 796, 980, 995, 1051, 1393, 1990, 2102, 2786, 3980, 4204, 5255, 5572, 6965, 7357, 9751, 10510, 13930, 14714, 19502, 21020, 27860, 29428, 36785, 39004, 48755, 51499, 73570, 97510, 102998, 147140, 195020, 205996, 209149, 257495, 418298, 514990, 836596, 1029980, 1045745, 1464043, 2091490, 2928086, 4182980, 5856172, 7320215, 10248301, 14640430, 20496602, 29280860, 40993204, 51241505, 102483010, 204966020]

約数ペア:

[(1, 204966020), (2, 102483010), (4, 51241505), (5, 40993204), (7, 29280860), (10, 20496602), (14, 14640430), (20, 10248301), (28, 7320215), (35, 5856172), (49, 4182980), (70, 2928086), (98, 2091490), (140, 1464043), (196, 1045745), (199, 1029980), (245, 836596), (398, 514990), (490, 418298), (796, 257495), (980, 209149), (995, 205996), (1051, 195020), (1393, 147140), (1990, 102998), (2102, 97510), (2786, 73570), (3980, 51499), (4204, 48755), (5255, 39004), (5572, 36785), (6965, 29428), (7357, 27860), (9751, 21020), (10510, 19502), (13930, 14714)]