215280650

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^2\times {\mathrm{73}}^1\times {\mathrm{349}}^1$

素因数の和:460

約数の個数: 72

約数和(自身を含む): 440792100

約数和(自身を除く): 225511450

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 73, 130, 146, 169, 325, 338, 349, 365, 650, 698, 730, 845, 949, 1690, 1745, 1825, 1898, 3490, 3650, 4225, 4537, 4745, 8450, 8725, 9074, 9490, 12337, 17450, 22685, 23725, 24674, 25477, 45370, 47450, 50954, 58981, 61685, 113425, 117962, 123370, 127385, 226850, 254770, 294905, 308425, 331201, 589810, 616850, 636925, 662402, 1273850, 1474525, 1656005, 2949050, 3312010, 4305613, 8280025, 8611226, 16560050, 21528065, 43056130, 107640325, 215280650]

約数ペア:

[(1, 215280650), (2, 107640325), (5, 43056130), (10, 21528065), (13, 16560050), (25, 8611226), (26, 8280025), (50, 4305613), (65, 3312010), (73, 2949050), (130, 1656005), (146, 1474525), (169, 1273850), (325, 662402), (338, 636925), (349, 616850), (365, 589810), (650, 331201), (698, 308425), (730, 294905), (845, 254770), (949, 226850), (1690, 127385), (1745, 123370), (1825, 117962), (1898, 113425), (3490, 61685), (3650, 58981), (4225, 50954), (4537, 47450), (4745, 45370), (8450, 25477), (8725, 24674), (9074, 23725), (9490, 22685), (12337, 17450)]