19707640

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{3761}}^1$

素因数の和:3903

約数の個数: 32

約数和(自身を含む): 44692560

約数和(自身を除く): 24984920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 524, 655, 1048, 1310, 2620, 3761, 5240, 7522, 15044, 18805, 30088, 37610, 75220, 150440, 492691, 985382, 1970764, 2463455, 3941528, 4926910, 9853820, 19707640]

約数ペア:

[(1, 19707640), (2, 9853820), (4, 4926910), (5, 3941528), (8, 2463455), (10, 1970764), (20, 985382), (40, 492691), (131, 150440), (262, 75220), (524, 37610), (655, 30088), (1048, 18805), (1310, 15044), (2620, 7522), (3761, 5240)]