19306120

素因数分解:

$2^3\times 5^1\times {\mathrm{491}}^1\times {\mathrm{983}}^1$

素因数の和:1485

約数の個数: 32

約数和(自身を含む): 43571520

約数和(自身を除く): 24265400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491, 982, 983, 1964, 1966, 2455, 3928, 3932, 4910, 4915, 7864, 9820, 9830, 19640, 19660, 39320, 482653, 965306, 1930612, 2413265, 3861224, 4826530, 9653060, 19306120]

約数ペア:

[(1, 19306120), (2, 9653060), (4, 4826530), (5, 3861224), (8, 2413265), (10, 1930612), (20, 965306), (40, 482653), (491, 39320), (982, 19660), (983, 19640), (1964, 9830), (1966, 9820), (2455, 7864), (3928, 4915), (3932, 4910)]