209218960

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{23993}}^1$

素因数の和:24115

約数の個数: 40

約数和(自身を含む): 490917240

約数和(自身を除く): 281698280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 4360, 8720, 23993, 47986, 95972, 119965, 191944, 239930, 383888, 479860, 959720, 1919440, 2615237, 5230474, 10460948, 13076185, 20921896, 26152370, 41843792, 52304740, 104609480, 209218960]

約数ペア:

[(1, 209218960), (2, 104609480), (4, 52304740), (5, 41843792), (8, 26152370), (10, 20921896), (16, 13076185), (20, 10460948), (40, 5230474), (80, 2615237), (109, 1919440), (218, 959720), (436, 479860), (545, 383888), (872, 239930), (1090, 191944), (1744, 119965), (2180, 95972), (4360, 47986), (8720, 23993)]