20199760

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{5153}}^1$

素因数の和:5180

約数の個数: 60

約数和(自身を含む): 54642708

約数和(自身を除く): 34442948

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 5153, 10306, 20612, 25765, 36071, 41224, 51530, 72142, 82448, 103060, 144284, 180355, 206120, 252497, 288568, 360710, 412240, 504994, 577136, 721420, 1009988, 1262485, 1442840, 2019976, 2524970, 2885680, 4039952, 5049940, 10099880, 20199760]

約数ペア:

[(1, 20199760), (2, 10099880), (4, 5049940), (5, 4039952), (7, 2885680), (8, 2524970), (10, 2019976), (14, 1442840), (16, 1262485), (20, 1009988), (28, 721420), (35, 577136), (40, 504994), (49, 412240), (56, 360710), (70, 288568), (80, 252497), (98, 206120), (112, 180355), (140, 144284), (196, 103060), (245, 82448), (280, 72142), (392, 51530), (490, 41224), (560, 36071), (784, 25765), (980, 20612), (1960, 10306), (3920, 5153)]