20643350

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{349}}^1$

素因数の和:394

約数の個数: 72

約数和(自身を含む): 47653200

約数和(自身を除く): 27009850

約数列:

[1, 2, 5, 7, 10, 13, 14, 25, 26, 35, 50, 65, 70, 91, 130, 169, 175, 182, 325, 338, 349, 350, 455, 650, 698, 845, 910, 1183, 1690, 1745, 2275, 2366, 2443, 3490, 4225, 4537, 4550, 4886, 5915, 8450, 8725, 9074, 11830, 12215, 17450, 22685, 24430, 29575, 31759, 45370, 58981, 59150, 61075, 63518, 113425, 117962, 122150, 158795, 226850, 294905, 317590, 412867, 589810, 793975, 825734, 1474525, 1587950, 2064335, 2949050, 4128670, 10321675, 20643350]

約数ペア:

[(1, 20643350), (2, 10321675), (5, 4128670), (7, 2949050), (10, 2064335), (13, 1587950), (14, 1474525), (25, 825734), (26, 793975), (35, 589810), (50, 412867), (65, 317590), (70, 294905), (91, 226850), (130, 158795), (169, 122150), (175, 117962), (182, 113425), (325, 63518), (338, 61075), (349, 59150), (350, 58981), (455, 45370), (650, 31759), (698, 29575), (845, 24430), (910, 22685), (1183, 17450), (1690, 12215), (1745, 11830), (2275, 9074), (2366, 8725), (2443, 8450), (3490, 5915), (4225, 4886), (4537, 4550)]