18939640

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{4597}}^1$

素因数の和:4711

約数の個数: 32

約数和(自身を含む): 43037280

約数和(自身を除く): 24097640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 4597, 9194, 18388, 22985, 36776, 45970, 91940, 183880, 473491, 946982, 1893964, 2367455, 3787928, 4734910, 9469820, 18939640]

約数ペア:

[(1, 18939640), (2, 9469820), (4, 4734910), (5, 3787928), (8, 2367455), (10, 1893964), (20, 946982), (40, 473491), (103, 183880), (206, 91940), (412, 45970), (515, 36776), (824, 22985), (1030, 18388), (2060, 9194), (4120, 4597)]